Home / 7,123.40-10,685.10-3,624.20

Finding the Fourth Proportional to 7,123.40, 10,685.10 and 3,624.20

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Solution

The fourth proportional to 7,123.40, 10,685.10 and 3,624.20 is: 5,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.40 : 10,685.10 = 3,624.20 : x
  2. Step 2: Convert to fraction form
    7,123.40/10,685.10 = 3,624.20/x
  3. Step 3: Cross multiply
    7,123.40x = 10,685.10 × 3,624.20
  4. Step 4: Simplify right side
    7,123.40x = 38,724,939.42
  5. Step 5: Solve for x
    x = 38,724,939.42/7,123.40
  6. Step 6: Final answer
    x = 5,436.30

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Similar ratio
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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.