Home / 5,148.56-7,721.22-1,685

Finding the Fourth Proportional to 5,148.56, 7,721.22 and 1,685

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Solution

The fourth proportional to 5,148.56, 7,721.22 and 1,685 is: 2,526.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.56 : 7,721.22 = 1,685 : x
  2. Step 2: Convert to fraction form
    5,148.56/7,721.22 = 1,685/x
  3. Step 3: Cross multiply
    5,148.56x = 7,721.22 × 1,685
  4. Step 4: Simplify right side
    5,148.56x = 13,010,255.70
  5. Step 5: Solve for x
    x = 13,010,255.70/5,148.56
  6. Step 6: Final answer
    x = 2,526.97

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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.