Home / 2,132.53-3,182.12-1,688.75

Finding the Fourth Proportional to 2,132.53, 3,182.12 and 1,688.75

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Solution

The fourth proportional to 2,132.53, 3,182.12 and 1,688.75 is: 2,519.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.53 : 3,182.12 = 1,688.75 : x
  2. Step 2: Convert to fraction form
    2,132.53/3,182.12 = 1,688.75/x
  3. Step 3: Cross multiply
    2,132.53x = 3,182.12 × 1,688.75
  4. Step 4: Simplify right side
    2,132.53x = 5,373,799.06
  5. Step 5: Solve for x
    x = 5,373,799.06/2,132.53
  6. Step 6: Final answer
    x = 2,519.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.