Home / 5,148.51-7,721.13-1,861.17

Finding the Fourth Proportional to 5,148.51, 7,721.13 and 1,861.17

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Solution

The fourth proportional to 5,148.51, 7,721.13 and 1,861.17 is: 2,791.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.51 : 7,721.13 = 1,861.17 : x
  2. Step 2: Convert to fraction form
    5,148.51/7,721.13 = 1,861.17/x
  3. Step 3: Cross multiply
    5,148.51x = 7,721.13 × 1,861.17
  4. Step 4: Simplify right side
    5,148.51x = 14,370,335.52
  5. Step 5: Solve for x
    x = 14,370,335.52/5,148.51
  6. Step 6: Final answer
    x = 2,791.16

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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.