Home / 8,631.36-11,929.68-7,607.52

Finding the Fourth Proportional to 8,631.36, 11,929.68 and 7,607.52

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Solution

The fourth proportional to 8,631.36, 11,929.68 and 7,607.52 is: 10,514.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.36 : 11,929.68 = 7,607.52 : x
  2. Step 2: Convert to fraction form
    8,631.36/11,929.68 = 7,607.52/x
  3. Step 3: Cross multiply
    8,631.36x = 11,929.68 × 7,607.52
  4. Step 4: Simplify right side
    8,631.36x = 90,755,279.19
  5. Step 5: Solve for x
    x = 90,755,279.19/8,631.36
  6. Step 6: Final answer
    x = 10,514.60

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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.