Home / 5,854.40-8,781.58-1,958.80

Finding the Fourth Proportional to 5,854.40, 8,781.58 and 1,958.80

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Solution

The fourth proportional to 5,854.40, 8,781.58 and 1,958.80 is: 2,938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,854.40 : 8,781.58 = 1,958.80 : x
  2. Step 2: Convert to fraction form
    5,854.40/8,781.58 = 1,958.80/x
  3. Step 3: Cross multiply
    5,854.40x = 8,781.58 × 1,958.80
  4. Step 4: Simplify right side
    5,854.40x = 17,201,358.90
  5. Step 5: Solve for x
    x = 17,201,358.90/5,854.40
  6. Step 6: Final answer
    x = 2,938.19

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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.