Home / 1,531.16-2,296.48-709.36

Finding the Fourth Proportional to 1,531.16, 2,296.48 and 709.36

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Solution

The fourth proportional to 1,531.16, 2,296.48 and 709.36 is: 1,063.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.16 : 2,296.48 = 709.36 : x
  2. Step 2: Convert to fraction form
    1,531.16/2,296.48 = 709.36/x
  3. Step 3: Cross multiply
    1,531.16x = 2,296.48 × 709.36
  4. Step 4: Simplify right side
    1,531.16x = 1,629,031.05
  5. Step 5: Solve for x
    x = 1,629,031.05/1,531.16
  6. Step 6: Final answer
    x = 1,063.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.