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Finding the Fourth Proportional to 8,710.74, 12,014.66 and 5,355.44

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Solution

The fourth proportional to 8,710.74, 12,014.66 and 5,355.44 is: 7,386.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.74 : 12,014.66 = 5,355.44 : x
  2. Step 2: Convert to fraction form
    8,710.74/12,014.66 = 5,355.44/x
  3. Step 3: Cross multiply
    8,710.74x = 12,014.66 × 5,355.44
  4. Step 4: Simplify right side
    8,710.74x = 64,343,744.07
  5. Step 5: Solve for x
    x = 64,343,744.07/8,710.74
  6. Step 6: Final answer
    x = 7,386.71

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Half 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.