Home / 8,955.40-12,360.23-5,179.77

Finding the Fourth Proportional to 8,955.40, 12,360.23 and 5,179.77

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Solution

The fourth proportional to 8,955.40, 12,360.23 and 5,179.77 is: 7,149.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.40 : 12,360.23 = 5,179.77 : x
  2. Step 2: Convert to fraction form
    8,955.40/12,360.23 = 5,179.77/x
  3. Step 3: Cross multiply
    8,955.40x = 12,360.23 × 5,179.77
  4. Step 4: Simplify right side
    8,955.40x = 64,023,198.69
  5. Step 5: Solve for x
    x = 64,023,198.69/8,955.40
  6. Step 6: Final answer
    x = 7,149.12

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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.