Home / 3,123.38-4,680.20-1,966.70

Finding the Fourth Proportional to 3,123.38, 4,680.20 and 1,966.70

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Solution

The fourth proportional to 3,123.38, 4,680.20 and 1,966.70 is: 2,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.38 : 4,680.20 = 1,966.70 : x
  2. Step 2: Convert to fraction form
    3,123.38/4,680.20 = 1,966.70/x
  3. Step 3: Cross multiply
    3,123.38x = 4,680.20 × 1,966.70
  4. Step 4: Simplify right side
    3,123.38x = 9,204,549.34
  5. Step 5: Solve for x
    x = 9,204,549.34/3,123.38
  6. Step 6: Final answer
    x = 2,946.98

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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.