Home / 5,478.12-7,560.18-3,119.76

Finding the Fourth Proportional to 5,478.12, 7,560.18 and 3,119.76

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Solution

The fourth proportional to 5,478.12, 7,560.18 and 3,119.76 is: 4,305.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.12 : 7,560.18 = 3,119.76 : x
  2. Step 2: Convert to fraction form
    5,478.12/7,560.18 = 3,119.76/x
  3. Step 3: Cross multiply
    5,478.12x = 7,560.18 × 3,119.76
  4. Step 4: Simplify right side
    5,478.12x = 23,585,947.16
  5. Step 5: Solve for x
    x = 23,585,947.16/5,478.12
  6. Step 6: Final answer
    x = 4,305.48

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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.