Home / 3,158.31-4,358.48-1,761.15

Finding the Fourth Proportional to 3,158.31, 4,358.48 and 1,761.15

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Solution

The fourth proportional to 3,158.31, 4,358.48 and 1,761.15 is: 2,430.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.31 : 4,358.48 = 1,761.15 : x
  2. Step 2: Convert to fraction form
    3,158.31/4,358.48 = 1,761.15/x
  3. Step 3: Cross multiply
    3,158.31x = 4,358.48 × 1,761.15
  4. Step 4: Simplify right side
    3,158.31x = 7,675,928.25
  5. Step 5: Solve for x
    x = 7,675,928.25/3,158.31
  6. Step 6: Final answer
    x = 2,430.39

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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.