Home / 5,386.12-7,433.12-3,147.86

Finding the Fourth Proportional to 5,386.12, 7,433.12 and 3,147.86

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Solution

The fourth proportional to 5,386.12, 7,433.12 and 3,147.86 is: 4,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.12 : 7,433.12 = 3,147.86 : x
  2. Step 2: Convert to fraction form
    5,386.12/7,433.12 = 3,147.86/x
  3. Step 3: Cross multiply
    5,386.12x = 7,433.12 × 3,147.86
  4. Step 4: Simplify right side
    5,386.12x = 23,398,447.58
  5. Step 5: Solve for x
    x = 23,398,447.58/5,386.12
  6. Step 6: Final answer
    x = 4,344.21

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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.