Home / 5,105.10-7,045.22-2,867.40

Finding the Fourth Proportional to 5,105.10, 7,045.22 and 2,867.40

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Solution

The fourth proportional to 5,105.10, 7,045.22 and 2,867.40 is: 3,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.10 : 7,045.22 = 2,867.40 : x
  2. Step 2: Convert to fraction form
    5,105.10/7,045.22 = 2,867.40/x
  3. Step 3: Cross multiply
    5,105.10x = 7,045.22 × 2,867.40
  4. Step 4: Simplify right side
    5,105.10x = 20,201,463.83
  5. Step 5: Solve for x
    x = 20,201,463.83/5,105.10
  6. Step 6: Final answer
    x = 3,957.11

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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.