Home / 5,386.13-7,431.45-3,146.73

Finding the Fourth Proportional to 5,386.13, 7,431.45 and 3,146.73

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Solution

The fourth proportional to 5,386.13, 7,431.45 and 3,146.73 is: 4,341.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.13 : 7,431.45 = 3,146.73 : x
  2. Step 2: Convert to fraction form
    5,386.13/7,431.45 = 3,146.73/x
  3. Step 3: Cross multiply
    5,386.13x = 7,431.45 × 3,146.73
  4. Step 4: Simplify right side
    5,386.13x = 23,384,766.66
  5. Step 5: Solve for x
    x = 23,384,766.66/5,386.13
  6. Step 6: Final answer
    x = 4,341.66

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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.