Home / 1,403.64-1,939.68-1,031.04

Finding the Fourth Proportional to 1,403.64, 1,939.68 and 1,031.04

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Solution

The fourth proportional to 1,403.64, 1,939.68 and 1,031.04 is: 1,424.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.64 : 1,939.68 = 1,031.04 : x
  2. Step 2: Convert to fraction form
    1,403.64/1,939.68 = 1,031.04/x
  3. Step 3: Cross multiply
    1,403.64x = 1,939.68 × 1,031.04
  4. Step 4: Simplify right side
    1,403.64x = 1,999,887.67
  5. Step 5: Solve for x
    x = 1,999,887.67/1,403.64
  6. Step 6: Final answer
    x = 1,424.79

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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.