Home / 8,077.76-12,113.64-3,146.84

Finding the Fourth Proportional to 8,077.76, 12,113.64 and 3,146.84

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Solution

The fourth proportional to 8,077.76, 12,113.64 and 3,146.84 is: 4,719.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.76 : 12,113.64 = 3,146.84 : x
  2. Step 2: Convert to fraction form
    8,077.76/12,113.64 = 3,146.84/x
  3. Step 3: Cross multiply
    8,077.76x = 12,113.64 × 3,146.84
  4. Step 4: Simplify right side
    8,077.76x = 38,119,686.90
  5. Step 5: Solve for x
    x = 38,119,686.90/8,077.76
  6. Step 6: Final answer
    x = 4,719.09

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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.