Home / 3,115.76-4,671.38-1,471.40

Finding the Fourth Proportional to 3,115.76, 4,671.38 and 1,471.40

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Solution

The fourth proportional to 3,115.76, 4,671.38 and 1,471.40 is: 2,206.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.76 : 4,671.38 = 1,471.40 : x
  2. Step 2: Convert to fraction form
    3,115.76/4,671.38 = 1,471.40/x
  3. Step 3: Cross multiply
    3,115.76x = 4,671.38 × 1,471.40
  4. Step 4: Simplify right side
    3,115.76x = 6,873,468.53
  5. Step 5: Solve for x
    x = 6,873,468.53/3,115.76
  6. Step 6: Final answer
    x = 2,206.03

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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.