Home / 1,451.28-2,161.80-1,432.20

Finding the Fourth Proportional to 1,451.28, 2,161.80 and 1,432.20

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Solution

The fourth proportional to 1,451.28, 2,161.80 and 1,432.20 is: 2,133.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.28 : 2,161.80 = 1,432.20 : x
  2. Step 2: Convert to fraction form
    1,451.28/2,161.80 = 1,432.20/x
  3. Step 3: Cross multiply
    1,451.28x = 2,161.80 × 1,432.20
  4. Step 4: Simplify right side
    1,451.28x = 3,096,129.96
  5. Step 5: Solve for x
    x = 3,096,129.96/1,451.28
  6. Step 6: Final answer
    x = 2,133.38

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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.