Home / 1,681.29-2,520.77-706.59

Finding the Fourth Proportional to 1,681.29, 2,520.77 and 706.59

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Solution

The fourth proportional to 1,681.29, 2,520.77 and 706.59 is: 1,059.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.29 : 2,520.77 = 706.59 : x
  2. Step 2: Convert to fraction form
    1,681.29/2,520.77 = 706.59/x
  3. Step 3: Cross multiply
    1,681.29x = 2,520.77 × 706.59
  4. Step 4: Simplify right side
    1,681.29x = 1,781,147.34
  5. Step 5: Solve for x
    x = 1,781,147.34/1,681.29
  6. Step 6: Final answer
    x = 1,059.39

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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.