Home / 1,739.19-2,399.88-1,031.31

Finding the Fourth Proportional to 1,739.19, 2,399.88 and 1,031.31

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Solution

The fourth proportional to 1,739.19, 2,399.88 and 1,031.31 is: 1,423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,739.19 : 2,399.88 = 1,031.31 : x
  2. Step 2: Convert to fraction form
    1,739.19/2,399.88 = 1,031.31/x
  3. Step 3: Cross multiply
    1,739.19x = 2,399.88 × 1,031.31
  4. Step 4: Simplify right side
    1,739.19x = 2,475,020.24
  5. Step 5: Solve for x
    x = 2,475,020.24/1,739.19
  6. Step 6: Final answer
    x = 1,423.09

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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.