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Finding the Fourth Proportional to 5,612.88, 8,419.29 and 1,452.90

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Solution

The fourth proportional to 5,612.88, 8,419.29 and 1,452.90 is: 2,179.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.88 : 8,419.29 = 1,452.90 : x
  2. Step 2: Convert to fraction form
    5,612.88/8,419.29 = 1,452.90/x
  3. Step 3: Cross multiply
    5,612.88x = 8,419.29 × 1,452.90
  4. Step 4: Simplify right side
    5,612.88x = 12,232,386.44
  5. Step 5: Solve for x
    x = 12,232,386.44/5,612.88
  6. Step 6: Final answer
    x = 2,179.34

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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.