Home / 5,291.57-7,937.46-1,781.68

Finding the Fourth Proportional to 5,291.57, 7,937.46 and 1,781.68

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Solution

The fourth proportional to 5,291.57, 7,937.46 and 1,781.68 is: 2,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.57 : 7,937.46 = 1,781.68 : x
  2. Step 2: Convert to fraction form
    5,291.57/7,937.46 = 1,781.68/x
  3. Step 3: Cross multiply
    5,291.57x = 7,937.46 × 1,781.68
  4. Step 4: Simplify right side
    5,291.57x = 14,141,993.89
  5. Step 5: Solve for x
    x = 14,141,993.89/5,291.57
  6. Step 6: Final answer
    x = 2,672.55

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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.