Home / 8,980.20-12,391.38-5,443.74

Finding the Fourth Proportional to 8,980.20, 12,391.38 and 5,443.74

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Solution

The fourth proportional to 8,980.20, 12,391.38 and 5,443.74 is: 7,511.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.20 : 12,391.38 = 5,443.74 : x
  2. Step 2: Convert to fraction form
    8,980.20/12,391.38 = 5,443.74/x
  3. Step 3: Cross multiply
    8,980.20x = 12,391.38 × 5,443.74
  4. Step 4: Simplify right side
    8,980.20x = 67,455,450.96
  5. Step 5: Solve for x
    x = 67,455,450.96/8,980.20
  6. Step 6: Final answer
    x = 7,511.58

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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.