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Finding the Fourth Proportional to 5,372.88, 8,043.48 and 5,240.40

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Solution

The fourth proportional to 5,372.88, 8,043.48 and 5,240.40 is: 7,845.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,372.88 : 8,043.48 = 5,240.40 : x
  2. Step 2: Convert to fraction form
    5,372.88/8,043.48 = 5,240.40/x
  3. Step 3: Cross multiply
    5,372.88x = 8,043.48 × 5,240.40
  4. Step 4: Simplify right side
    5,372.88x = 42,151,052.59
  5. Step 5: Solve for x
    x = 42,151,052.59/5,372.88
  6. Step 6: Final answer
    x = 7,845.15

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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.