Home / 1,296.49-1,789.15-707.03

Finding the Fourth Proportional to 1,296.49, 1,789.15 and 707.03

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Solution

The fourth proportional to 1,296.49, 1,789.15 and 707.03 is: 975.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.49 : 1,789.15 = 707.03 : x
  2. Step 2: Convert to fraction form
    1,296.49/1,789.15 = 707.03/x
  3. Step 3: Cross multiply
    1,296.49x = 1,789.15 × 707.03
  4. Step 4: Simplify right side
    1,296.49x = 1,264,982.72
  5. Step 5: Solve for x
    x = 1,264,982.72/1,296.49
  6. Step 6: Final answer
    x = 975.70

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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.