Home / 1,296.56-1,789.29-707.11

Finding the Fourth Proportional to 1,296.56, 1,789.29 and 707.11

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Solution

The fourth proportional to 1,296.56, 1,789.29 and 707.11 is: 975.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.56 : 1,789.29 = 707.11 : x
  2. Step 2: Convert to fraction form
    1,296.56/1,789.29 = 707.11/x
  3. Step 3: Cross multiply
    1,296.56x = 1,789.29 × 707.11
  4. Step 4: Simplify right side
    1,296.56x = 1,265,215.91
  5. Step 5: Solve for x
    x = 1,265,215.91/1,296.56
  6. Step 6: Final answer
    x = 975.83

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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.