Home / 2,631.53-3,631.86-1,687.48

Finding the Fourth Proportional to 2,631.53, 3,631.86 and 1,687.48

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Solution

The fourth proportional to 2,631.53, 3,631.86 and 1,687.48 is: 2,328.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.53 : 3,631.86 = 1,687.48 : x
  2. Step 2: Convert to fraction form
    2,631.53/3,631.86 = 1,687.48/x
  3. Step 3: Cross multiply
    2,631.53x = 3,631.86 × 1,687.48
  4. Step 4: Simplify right side
    2,631.53x = 6,128,691.11
  5. Step 5: Solve for x
    x = 6,128,691.11/2,631.53
  6. Step 6: Final answer
    x = 2,328.95

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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.