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Finding the Fourth Proportional to 8,752.12, 12,068.12 and 7,153.80

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Solution

The fourth proportional to 8,752.12, 12,068.12 and 7,153.80 is: 9,864.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752.12 : 12,068.12 = 7,153.80 : x
  2. Step 2: Convert to fraction form
    8,752.12/12,068.12 = 7,153.80/x
  3. Step 3: Cross multiply
    8,752.12x = 12,068.12 × 7,153.80
  4. Step 4: Simplify right side
    8,752.12x = 86,332,916.86
  5. Step 5: Solve for x
    x = 86,332,916.86/8,752.12
  6. Step 6: Final answer
    x = 9,864.23

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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.