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Finding the Fourth Proportional to 3,423.39, 5,135.99 and 1,572.99

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Solution

The fourth proportional to 3,423.39, 5,135.99 and 1,572.99 is: 2,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.39 : 5,135.99 = 1,572.99 : x
  2. Step 2: Convert to fraction form
    3,423.39/5,135.99 = 1,572.99/x
  3. Step 3: Cross multiply
    3,423.39x = 5,135.99 × 1,572.99
  4. Step 4: Simplify right side
    3,423.39x = 8,078,853.05
  5. Step 5: Solve for x
    x = 8,078,853.05/3,423.39
  6. Step 6: Final answer
    x = 2,359.90

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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.