Home / 1,557.20-2,149.06-894.22

Finding the Fourth Proportional to 1,557.20, 2,149.06 and 894.22

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Solution

The fourth proportional to 1,557.20, 2,149.06 and 894.22 is: 1,234.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.20 : 2,149.06 = 894.22 : x
  2. Step 2: Convert to fraction form
    1,557.20/2,149.06 = 894.22/x
  3. Step 3: Cross multiply
    1,557.20x = 2,149.06 × 894.22
  4. Step 4: Simplify right side
    1,557.20x = 1,921,732.43
  5. Step 5: Solve for x
    x = 1,921,732.43/1,557.20
  6. Step 6: Final answer
    x = 1,234.09

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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.