Home / 5,145.17-7,100.46-3,127.91

Finding the Fourth Proportional to 5,145.17, 7,100.46 and 3,127.91

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Solution

The fourth proportional to 5,145.17, 7,100.46 and 3,127.91 is: 4,316.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.17 : 7,100.46 = 3,127.91 : x
  2. Step 2: Convert to fraction form
    5,145.17/7,100.46 = 3,127.91/x
  3. Step 3: Cross multiply
    5,145.17x = 7,100.46 × 3,127.91
  4. Step 4: Simplify right side
    5,145.17x = 22,209,564.34
  5. Step 5: Solve for x
    x = 22,209,564.34/5,145.17
  6. Step 6: Final answer
    x = 4,316.59

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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.