Home / 8,620.59-11,885.34-5,631.69

Finding the Fourth Proportional to 8,620.59, 11,885.34 and 5,631.69

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Solution

The fourth proportional to 8,620.59, 11,885.34 and 5,631.69 is: 7,764.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.59 : 11,885.34 = 5,631.69 : x
  2. Step 2: Convert to fraction form
    8,620.59/11,885.34 = 5,631.69/x
  3. Step 3: Cross multiply
    8,620.59x = 11,885.34 × 5,631.69
  4. Step 4: Simplify right side
    8,620.59x = 66,934,550.42
  5. Step 5: Solve for x
    x = 66,934,550.42/8,620.59
  6. Step 6: Final answer
    x = 7,764.50

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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.