Home / 8,178.88-12,262.08-4,077.76

Finding the Fourth Proportional to 8,178.88, 12,262.08 and 4,077.76

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Solution

The fourth proportional to 8,178.88, 12,262.08 and 4,077.76 is: 6,113.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.88 : 12,262.08 = 4,077.76 : x
  2. Step 2: Convert to fraction form
    8,178.88/12,262.08 = 4,077.76/x
  3. Step 3: Cross multiply
    8,178.88x = 12,262.08 × 4,077.76
  4. Step 4: Simplify right side
    8,178.88x = 50,001,819.34
  5. Step 5: Solve for x
    x = 50,001,819.34/8,178.88
  6. Step 6: Final answer
    x = 6,113.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.