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Finding the Fourth Proportional to 3,423.97, 5,133.80 and 1,572.70

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Solution

The fourth proportional to 3,423.97, 5,133.80 and 1,572.70 is: 2,358.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.97 : 5,133.80 = 1,572.70 : x
  2. Step 2: Convert to fraction form
    3,423.97/5,133.80 = 1,572.70/x
  3. Step 3: Cross multiply
    3,423.97x = 5,133.80 × 1,572.70
  4. Step 4: Simplify right side
    3,423.97x = 8,073,927.26
  5. Step 5: Solve for x
    x = 8,073,927.26/3,423.97
  6. Step 6: Final answer
    x = 2,358.06

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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.