Home / 3,155.16-4,347-2,491.80

Finding the Fourth Proportional to 3,155.16, 4,347 and 2,491.80

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Solution

The fourth proportional to 3,155.16, 4,347 and 2,491.80 is: 3,433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.16 : 4,347 = 2,491.80 : x
  2. Step 2: Convert to fraction form
    3,155.16/4,347 = 2,491.80/x
  3. Step 3: Cross multiply
    3,155.16x = 4,347 × 2,491.80
  4. Step 4: Simplify right side
    3,155.16x = 10,831,854.60
  5. Step 5: Solve for x
    x = 10,831,854.60/3,155.16
  6. Step 6: Final answer
    x = 3,433.06

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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.