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Finding the Fourth Proportional to 8,695.83, 12,980.07 and 7,471.11

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Solution

The fourth proportional to 8,695.83, 12,980.07 and 7,471.11 is: 11,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.83 : 12,980.07 = 7,471.11 : x
  2. Step 2: Convert to fraction form
    8,695.83/12,980.07 = 7,471.11/x
  3. Step 3: Cross multiply
    8,695.83x = 12,980.07 × 7,471.11
  4. Step 4: Simplify right side
    8,695.83x = 96,975,530.78
  5. Step 5: Solve for x
    x = 96,975,530.78/8,695.83
  6. Step 6: Final answer
    x = 11,151.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.