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Finding the Fourth Proportional to 2,687.46, 3,707.80 and 1,625.55

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Solution

The fourth proportional to 2,687.46, 3,707.80 and 1,625.55 is: 2,242.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.46 : 3,707.80 = 1,625.55 : x
  2. Step 2: Convert to fraction form
    2,687.46/3,707.80 = 1,625.55/x
  3. Step 3: Cross multiply
    2,687.46x = 3,707.80 × 1,625.55
  4. Step 4: Simplify right side
    2,687.46x = 6,027,214.29
  5. Step 5: Solve for x
    x = 6,027,214.29/2,687.46
  6. Step 6: Final answer
    x = 2,242.72

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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.