Home / 5,422.28-8,130.56-1,911.62

Finding the Fourth Proportional to 5,422.28, 8,130.56 and 1,911.62

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Solution

The fourth proportional to 5,422.28, 8,130.56 and 1,911.62 is: 2,866.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.28 : 8,130.56 = 1,911.62 : x
  2. Step 2: Convert to fraction form
    5,422.28/8,130.56 = 1,911.62/x
  3. Step 3: Cross multiply
    5,422.28x = 8,130.56 × 1,911.62
  4. Step 4: Simplify right side
    5,422.28x = 15,542,541.11
  5. Step 5: Solve for x
    x = 15,542,541.11/5,422.28
  6. Step 6: Final answer
    x = 2,866.42

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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.