Home / 2,572.64-3,860.40-1,274.12

Finding the Fourth Proportional to 2,572.64, 3,860.40 and 1,274.12

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Solution

The fourth proportional to 2,572.64, 3,860.40 and 1,274.12 is: 1,911.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.64 : 3,860.40 = 1,274.12 : x
  2. Step 2: Convert to fraction form
    2,572.64/3,860.40 = 1,274.12/x
  3. Step 3: Cross multiply
    2,572.64x = 3,860.40 × 1,274.12
  4. Step 4: Simplify right side
    2,572.64x = 4,918,612.85
  5. Step 5: Solve for x
    x = 4,918,612.85/2,572.64
  6. Step 6: Final answer
    x = 1,911.89

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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.