Home / 5,155.76-7,114.28-3,031

Finding the Fourth Proportional to 5,155.76, 7,114.28 and 3,031

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Solution

The fourth proportional to 5,155.76, 7,114.28 and 3,031 is: 4,182.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.76 : 7,114.28 = 3,031 : x
  2. Step 2: Convert to fraction form
    5,155.76/7,114.28 = 3,031/x
  3. Step 3: Cross multiply
    5,155.76x = 7,114.28 × 3,031
  4. Step 4: Simplify right side
    5,155.76x = 21,563,382.68
  5. Step 5: Solve for x
    x = 21,563,382.68/5,155.76
  6. Step 6: Final answer
    x = 4,182.39

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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.