Home / 5,478.80-7,557.60-3,120.52

Finding the Fourth Proportional to 5,478.80, 7,557.60 and 3,120.52

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Solution

The fourth proportional to 5,478.80, 7,557.60 and 3,120.52 is: 4,304.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.80 : 7,557.60 = 3,120.52 : x
  2. Step 2: Convert to fraction form
    5,478.80/7,557.60 = 3,120.52/x
  3. Step 3: Cross multiply
    5,478.80x = 7,557.60 × 3,120.52
  4. Step 4: Simplify right side
    5,478.80x = 23,583,641.95
  5. Step 5: Solve for x
    x = 23,583,641.95/5,478.80
  6. Step 6: Final answer
    x = 4,304.53

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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.