Home / 5,115.78-7,660.98-4,193.64

Finding the Fourth Proportional to 5,115.78, 7,660.98 and 4,193.64

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Solution

The fourth proportional to 5,115.78, 7,660.98 and 4,193.64 is: 6,280.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.78 : 7,660.98 = 4,193.64 : x
  2. Step 2: Convert to fraction form
    5,115.78/7,660.98 = 4,193.64/x
  3. Step 3: Cross multiply
    5,115.78x = 7,660.98 × 4,193.64
  4. Step 4: Simplify right side
    5,115.78x = 32,127,392.17
  5. Step 5: Solve for x
    x = 32,127,392.17/5,115.78
  6. Step 6: Final answer
    x = 6,280.06

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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.