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Finding the Fourth Proportional to 1,627.60, 2,439.80 and 1,454.80

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Solution

The fourth proportional to 1,627.60, 2,439.80 and 1,454.80 is: 2,180.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.60 : 2,439.80 = 1,454.80 : x
  2. Step 2: Convert to fraction form
    1,627.60/2,439.80 = 1,454.80/x
  3. Step 3: Cross multiply
    1,627.60x = 2,439.80 × 1,454.80
  4. Step 4: Simplify right side
    1,627.60x = 3,549,421.04
  5. Step 5: Solve for x
    x = 3,549,421.04/1,627.60
  6. Step 6: Final answer
    x = 2,180.77

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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.