Home / 8,470.48-11,685.34-5,487.28

Finding the Fourth Proportional to 8,470.48, 11,685.34 and 5,487.28

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Solution

The fourth proportional to 8,470.48, 11,685.34 and 5,487.28 is: 7,569.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.48 : 11,685.34 = 5,487.28 : x
  2. Step 2: Convert to fraction form
    8,470.48/11,685.34 = 5,487.28/x
  3. Step 3: Cross multiply
    8,470.48x = 11,685.34 × 5,487.28
  4. Step 4: Simplify right side
    8,470.48x = 64,120,732.48
  5. Step 5: Solve for x
    x = 64,120,732.48/8,470.48
  6. Step 6: Final answer
    x = 7,569.91

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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.