Home / 5,420.18-7,480.17-3,182.72

Finding the Fourth Proportional to 5,420.18, 7,480.17 and 3,182.72

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Solution

The fourth proportional to 5,420.18, 7,480.17 and 3,182.72 is: 4,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.18 : 7,480.17 = 3,182.72 : x
  2. Step 2: Convert to fraction form
    5,420.18/7,480.17 = 3,182.72/x
  3. Step 3: Cross multiply
    5,420.18x = 7,480.17 × 3,182.72
  4. Step 4: Simplify right side
    5,420.18x = 23,807,249.26
  5. Step 5: Solve for x
    x = 23,807,249.26/5,420.18
  6. Step 6: Final answer
    x = 4,392.33

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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.