Home / 5,478.03-7,558.92-3,120.12

Finding the Fourth Proportional to 5,478.03, 7,558.92 and 3,120.12

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Solution

The fourth proportional to 5,478.03, 7,558.92 and 3,120.12 is: 4,305.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.03 : 7,558.92 = 3,120.12 : x
  2. Step 2: Convert to fraction form
    5,478.03/7,558.92 = 3,120.12/x
  3. Step 3: Cross multiply
    5,478.03x = 7,558.92 × 3,120.12
  4. Step 4: Simplify right side
    5,478.03x = 23,584,737.47
  5. Step 5: Solve for x
    x = 23,584,737.47/5,478.03
  6. Step 6: Final answer
    x = 4,305.33

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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.