Home / 5,439.66-8,159.66-1,930.20

Finding the Fourth Proportional to 5,439.66, 8,159.66 and 1,930.20

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Solution

The fourth proportional to 5,439.66, 8,159.66 and 1,930.20 is: 2,895.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.66 : 8,159.66 = 1,930.20 : x
  2. Step 2: Convert to fraction form
    5,439.66/8,159.66 = 1,930.20/x
  3. Step 3: Cross multiply
    5,439.66x = 8,159.66 × 1,930.20
  4. Step 4: Simplify right side
    5,439.66x = 15,749,775.73
  5. Step 5: Solve for x
    x = 15,749,775.73/5,439.66
  6. Step 6: Final answer
    x = 2,895.36

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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.