Home / 5,422.16-8,130.36-2,135.12

Finding the Fourth Proportional to 5,422.16, 8,130.36 and 2,135.12

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Solution

The fourth proportional to 5,422.16, 8,130.36 and 2,135.12 is: 3,201.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.16 : 8,130.36 = 2,135.12 : x
  2. Step 2: Convert to fraction form
    5,422.16/8,130.36 = 2,135.12/x
  3. Step 3: Cross multiply
    5,422.16x = 8,130.36 × 2,135.12
  4. Step 4: Simplify right side
    5,422.16x = 17,359,294.24
  5. Step 5: Solve for x
    x = 17,359,294.24/5,422.16
  6. Step 6: Final answer
    x = 3,201.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.