Home / 4,078.76-5,631.40-3,132.86

Finding the Fourth Proportional to 4,078.76, 5,631.40 and 3,132.86

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Solution

The fourth proportional to 4,078.76, 5,631.40 and 3,132.86 is: 4,325.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.76 : 5,631.40 = 3,132.86 : x
  2. Step 2: Convert to fraction form
    4,078.76/5,631.40 = 3,132.86/x
  3. Step 3: Cross multiply
    4,078.76x = 5,631.40 × 3,132.86
  4. Step 4: Simplify right side
    4,078.76x = 17,642,386.43
  5. Step 5: Solve for x
    x = 17,642,386.43/4,078.76
  6. Step 6: Final answer
    x = 4,325.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.