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Finding the Fourth Proportional to 3,574.40, 5,363.40 and 1,627.88

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Solution

The fourth proportional to 3,574.40, 5,363.40 and 1,627.88 is: 2,442.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,574.40 : 5,363.40 = 1,627.88 : x
  2. Step 2: Convert to fraction form
    3,574.40/5,363.40 = 1,627.88/x
  3. Step 3: Cross multiply
    3,574.40x = 5,363.40 × 1,627.88
  4. Step 4: Simplify right side
    3,574.40x = 8,730,971.59
  5. Step 5: Solve for x
    x = 8,730,971.59/3,574.40
  6. Step 6: Final answer
    x = 2,442.64

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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.