Home / 1,937.49-2,672.40-1,238.55

Finding the Fourth Proportional to 1,937.49, 2,672.40 and 1,238.55

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Solution

The fourth proportional to 1,937.49, 2,672.40 and 1,238.55 is: 1,708.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937.49 : 2,672.40 = 1,238.55 : x
  2. Step 2: Convert to fraction form
    1,937.49/2,672.40 = 1,238.55/x
  3. Step 3: Cross multiply
    1,937.49x = 2,672.40 × 1,238.55
  4. Step 4: Simplify right side
    1,937.49x = 3,309,901.02
  5. Step 5: Solve for x
    x = 3,309,901.02/1,937.49
  6. Step 6: Final answer
    x = 1,708.34

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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.