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Finding the Fourth Proportional to 1,902.40, 2,853.60 and 1,520.08

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Solution

The fourth proportional to 1,902.40, 2,853.60 and 1,520.08 is: 2,280.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.40 : 2,853.60 = 1,520.08 : x
  2. Step 2: Convert to fraction form
    1,902.40/2,853.60 = 1,520.08/x
  3. Step 3: Cross multiply
    1,902.40x = 2,853.60 × 1,520.08
  4. Step 4: Simplify right side
    1,902.40x = 4,337,700.29
  5. Step 5: Solve for x
    x = 4,337,700.29/1,902.40
  6. Step 6: Final answer
    x = 2,280.12

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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.