Home / 1,451.10-2,002.10-891.44

Finding the Fourth Proportional to 1,451.10, 2,002.10 and 891.44

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Solution

The fourth proportional to 1,451.10, 2,002.10 and 891.44 is: 1,229.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.10 : 2,002.10 = 891.44 : x
  2. Step 2: Convert to fraction form
    1,451.10/2,002.10 = 891.44/x
  3. Step 3: Cross multiply
    1,451.10x = 2,002.10 × 891.44
  4. Step 4: Simplify right side
    1,451.10x = 1,784,752.02
  5. Step 5: Solve for x
    x = 1,784,752.02/1,451.10
  6. Step 6: Final answer
    x = 1,229.93

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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.