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Finding the Fourth Proportional to 9,177.69, 12,670.59 and 6,657.38

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Solution

The fourth proportional to 9,177.69, 12,670.59 and 6,657.38 is: 9,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,177.69 : 12,670.59 = 6,657.38 : x
  2. Step 2: Convert to fraction form
    9,177.69/12,670.59 = 6,657.38/x
  3. Step 3: Cross multiply
    9,177.69x = 12,670.59 × 6,657.38
  4. Step 4: Simplify right side
    9,177.69x = 84,352,869.10
  5. Step 5: Solve for x
    x = 84,352,869.10/9,177.69
  6. Step 6: Final answer
    x = 9,191.08

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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.