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Finding the Fourth Proportional to 8,480.57, 11,713.01 and 7,988.49

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Solution

The fourth proportional to 8,480.57, 11,713.01 and 7,988.49 is: 11,033.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.57 : 11,713.01 = 7,988.49 : x
  2. Step 2: Convert to fraction form
    8,480.57/11,713.01 = 7,988.49/x
  3. Step 3: Cross multiply
    8,480.57x = 11,713.01 × 7,988.49
  4. Step 4: Simplify right side
    8,480.57x = 93,569,223.31
  5. Step 5: Solve for x
    x = 93,569,223.31/8,480.57
  6. Step 6: Final answer
    x = 11,033.37

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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.