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Finding the Fourth Proportional to 7,153.03, 9,870.76 and 4,009.15

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Solution

The fourth proportional to 7,153.03, 9,870.76 and 4,009.15 is: 5,532.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.03 : 9,870.76 = 4,009.15 : x
  2. Step 2: Convert to fraction form
    7,153.03/9,870.76 = 4,009.15/x
  3. Step 3: Cross multiply
    7,153.03x = 9,870.76 × 4,009.15
  4. Step 4: Simplify right side
    7,153.03x = 39,573,357.45
  5. Step 5: Solve for x
    x = 39,573,357.45/7,153.03
  6. Step 6: Final answer
    x = 5,532.39

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Half scale
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Double scale
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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.