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Finding the Fourth Proportional to 1,937.61, 2,672.87 and 1,347.12

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Solution

The fourth proportional to 1,937.61, 2,672.87 and 1,347.12 is: 1,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937.61 : 2,672.87 = 1,347.12 : x
  2. Step 2: Convert to fraction form
    1,937.61/2,672.87 = 1,347.12/x
  3. Step 3: Cross multiply
    1,937.61x = 2,672.87 × 1,347.12
  4. Step 4: Simplify right side
    1,937.61x = 3,600,669.90
  5. Step 5: Solve for x
    x = 3,600,669.90/1,937.61
  6. Step 6: Final answer
    x = 1,858.30

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1.5x scale

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.