Home / 5,642.20-8,463.30-5,123.80

Finding the Fourth Proportional to 5,642.20, 8,463.30 and 5,123.80

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Solution

The fourth proportional to 5,642.20, 8,463.30 and 5,123.80 is: 7,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,642.20 : 8,463.30 = 5,123.80 : x
  2. Step 2: Convert to fraction form
    5,642.20/8,463.30 = 5,123.80/x
  3. Step 3: Cross multiply
    5,642.20x = 8,463.30 × 5,123.80
  4. Step 4: Simplify right side
    5,642.20x = 43,364,256.54
  5. Step 5: Solve for x
    x = 43,364,256.54/5,642.20
  6. Step 6: Final answer
    x = 7,685.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.