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Finding the Fourth Proportional to 8,472.16, 11,690.22 and 5,326.12

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Solution

The fourth proportional to 8,472.16, 11,690.22 and 5,326.12 is: 7,349.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.16 : 11,690.22 = 5,326.12 : x
  2. Step 2: Convert to fraction form
    8,472.16/11,690.22 = 5,326.12/x
  3. Step 3: Cross multiply
    8,472.16x = 11,690.22 × 5,326.12
  4. Step 4: Simplify right side
    8,472.16x = 62,263,514.55
  5. Step 5: Solve for x
    x = 62,263,514.55/8,472.16
  6. Step 6: Final answer
    x = 7,349.19

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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.