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Finding the Fourth Proportional to 5,612.88, 8,406.36 and 5,418.48

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Solution

The fourth proportional to 5,612.88, 8,406.36 and 5,418.48 is: 8,115.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.88 : 8,406.36 = 5,418.48 : x
  2. Step 2: Convert to fraction form
    5,612.88/8,406.36 = 5,418.48/x
  3. Step 3: Cross multiply
    5,612.88x = 8,406.36 × 5,418.48
  4. Step 4: Simplify right side
    5,612.88x = 45,549,693.53
  5. Step 5: Solve for x
    x = 45,549,693.53/5,612.88
  6. Step 6: Final answer
    x = 8,115.21

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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.