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Finding the Fourth Proportional to 9,349.38, 13,959 and 8,416.26

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Solution

The fourth proportional to 9,349.38, 13,959 and 8,416.26 is: 12,565.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,349.38 : 13,959 = 8,416.26 : x
  2. Step 2: Convert to fraction form
    9,349.38/13,959 = 8,416.26/x
  3. Step 3: Cross multiply
    9,349.38x = 13,959 × 8,416.26
  4. Step 4: Simplify right side
    9,349.38x = 117,482,573.34
  5. Step 5: Solve for x
    x = 117,482,573.34/9,349.38
  6. Step 6: Final answer
    x = 12,565.81

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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.