Home / 8,977.45-12,387.07-5,438.61

Finding the Fourth Proportional to 8,977.45, 12,387.07 and 5,438.61

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Solution

The fourth proportional to 8,977.45, 12,387.07 and 5,438.61 is: 7,504.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.45 : 12,387.07 = 5,438.61 : x
  2. Step 2: Convert to fraction form
    8,977.45/12,387.07 = 5,438.61/x
  3. Step 3: Cross multiply
    8,977.45x = 12,387.07 × 5,438.61
  4. Step 4: Simplify right side
    8,977.45x = 67,368,442.77
  5. Step 5: Solve for x
    x = 67,368,442.77/8,977.45
  6. Step 6: Final answer
    x = 7,504.18

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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.