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Finding the Fourth Proportional to 8,701.65, 12,003.30 and 5,509.08

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Solution

The fourth proportional to 8,701.65, 12,003.30 and 5,509.08 is: 7,599.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.65 : 12,003.30 = 5,509.08 : x
  2. Step 2: Convert to fraction form
    8,701.65/12,003.30 = 5,509.08/x
  3. Step 3: Cross multiply
    8,701.65x = 12,003.30 × 5,509.08
  4. Step 4: Simplify right side
    8,701.65x = 66,127,139.96
  5. Step 5: Solve for x
    x = 66,127,139.96/8,701.65
  6. Step 6: Final answer
    x = 7,599.38

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Half scale
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Double scale
Find fourth proportional to 8,702.65, 12,004.68 and 5,510.08
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.