Home / 9,178.01-12,671.55-6,311.51

Finding the Fourth Proportional to 9,178.01, 12,671.55 and 6,311.51

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Solution

The fourth proportional to 9,178.01, 12,671.55 and 6,311.51 is: 8,713.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.01 : 12,671.55 = 6,311.51 : x
  2. Step 2: Convert to fraction form
    9,178.01/12,671.55 = 6,311.51/x
  3. Step 3: Cross multiply
    9,178.01x = 12,671.55 × 6,311.51
  4. Step 4: Simplify right side
    9,178.01x = 79,976,614.54
  5. Step 5: Solve for x
    x = 79,976,614.54/9,178.01
  6. Step 6: Final answer
    x = 8,713.94

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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.