Home / 1,557.40-2,149.17-894.13

Finding the Fourth Proportional to 1,557.40, 2,149.17 and 894.13

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Solution

The fourth proportional to 1,557.40, 2,149.17 and 894.13 is: 1,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.40 : 2,149.17 = 894.13 : x
  2. Step 2: Convert to fraction form
    1,557.40/2,149.17 = 894.13/x
  3. Step 3: Cross multiply
    1,557.40x = 2,149.17 × 894.13
  4. Step 4: Simplify right side
    1,557.40x = 1,921,637.37
  5. Step 5: Solve for x
    x = 1,921,637.37/1,557.40
  6. Step 6: Final answer
    x = 1,233.88

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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.