Home / 5,155.29-7,116.66-3,974.31

Finding the Fourth Proportional to 5,155.29, 7,116.66 and 3,974.31

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Solution

The fourth proportional to 5,155.29, 7,116.66 and 3,974.31 is: 5,486.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.29 : 7,116.66 = 3,974.31 : x
  2. Step 2: Convert to fraction form
    5,155.29/7,116.66 = 3,974.31/x
  3. Step 3: Cross multiply
    5,155.29x = 7,116.66 × 3,974.31
  4. Step 4: Simplify right side
    5,155.29x = 28,283,813.00
  5. Step 5: Solve for x
    x = 28,283,813.00/5,155.29
  6. Step 6: Final answer
    x = 5,486.37

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1.5x scale

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.