Home / 8,728.97-12,036.67-6,487.16

Finding the Fourth Proportional to 8,728.97, 12,036.67 and 6,487.16

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Solution

The fourth proportional to 8,728.97, 12,036.67 and 6,487.16 is: 8,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.97 : 12,036.67 = 6,487.16 : x
  2. Step 2: Convert to fraction form
    8,728.97/12,036.67 = 6,487.16/x
  3. Step 3: Cross multiply
    8,728.97x = 12,036.67 × 6,487.16
  4. Step 4: Simplify right side
    8,728.97x = 78,083,727.76
  5. Step 5: Solve for x
    x = 78,083,727.76/8,728.97
  6. Step 6: Final answer
    x = 8,945.36

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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.