Home / 5,430.28-8,146.36-1,920.82

Finding the Fourth Proportional to 5,430.28, 8,146.36 and 1,920.82

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Solution

The fourth proportional to 5,430.28, 8,146.36 and 1,920.82 is: 2,881.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.28 : 8,146.36 = 1,920.82 : x
  2. Step 2: Convert to fraction form
    5,430.28/8,146.36 = 1,920.82/x
  3. Step 3: Cross multiply
    5,430.28x = 8,146.36 × 1,920.82
  4. Step 4: Simplify right side
    5,430.28x = 15,647,691.22
  5. Step 5: Solve for x
    x = 15,647,691.22/5,430.28
  6. Step 6: Final answer
    x = 2,881.56

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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.