Home / 5,187.60-7,781.49-1,292.01

Finding the Fourth Proportional to 5,187.60, 7,781.49 and 1,292.01

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Solution

The fourth proportional to 5,187.60, 7,781.49 and 1,292.01 is: 1,938.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.60 : 7,781.49 = 1,292.01 : x
  2. Step 2: Convert to fraction form
    5,187.60/7,781.49 = 1,292.01/x
  3. Step 3: Cross multiply
    5,187.60x = 7,781.49 × 1,292.01
  4. Step 4: Simplify right side
    5,187.60x = 10,053,762.89
  5. Step 5: Solve for x
    x = 10,053,762.89/5,187.60
  6. Step 6: Final answer
    x = 1,938.04

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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.