Home / 2,138.77-2,951.53-1,254.35

Finding the Fourth Proportional to 2,138.77, 2,951.53 and 1,254.35

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Solution

The fourth proportional to 2,138.77, 2,951.53 and 1,254.35 is: 1,731.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.77 : 2,951.53 = 1,254.35 : x
  2. Step 2: Convert to fraction form
    2,138.77/2,951.53 = 1,254.35/x
  3. Step 3: Cross multiply
    2,138.77x = 2,951.53 × 1,254.35
  4. Step 4: Simplify right side
    2,138.77x = 3,702,251.66
  5. Step 5: Solve for x
    x = 3,702,251.66/2,138.77
  6. Step 6: Final answer
    x = 1,731.02

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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.