Home / 9,129.97-12,607.05-6,155.65

Finding the Fourth Proportional to 9,129.97, 12,607.05 and 6,155.65

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Solution

The fourth proportional to 9,129.97, 12,607.05 and 6,155.65 is: 8,499.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.97 : 12,607.05 = 6,155.65 : x
  2. Step 2: Convert to fraction form
    9,129.97/12,607.05 = 6,155.65/x
  3. Step 3: Cross multiply
    9,129.97x = 12,607.05 × 6,155.65
  4. Step 4: Simplify right side
    9,129.97x = 77,604,587.33
  5. Step 5: Solve for x
    x = 77,604,587.33/9,129.97
  6. Step 6: Final answer
    x = 8,499.98

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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.