Home / 1,031.15-1,423.13-611.87

Finding the Fourth Proportional to 1,031.15, 1,423.13 and 611.87

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Solution

The fourth proportional to 1,031.15, 1,423.13 and 611.87 is: 844.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.15 : 1,423.13 = 611.87 : x
  2. Step 2: Convert to fraction form
    1,031.15/1,423.13 = 611.87/x
  3. Step 3: Cross multiply
    1,031.15x = 1,423.13 × 611.87
  4. Step 4: Simplify right side
    1,031.15x = 870,767.49
  5. Step 5: Solve for x
    x = 870,767.49/1,031.15
  6. Step 6: Final answer
    x = 844.46

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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.