Home / 9,007.20-12,435.12-6,178.68

Finding the Fourth Proportional to 9,007.20, 12,435.12 and 6,178.68

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Solution

The fourth proportional to 9,007.20, 12,435.12 and 6,178.68 is: 8,530.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,007.20 : 12,435.12 = 6,178.68 : x
  2. Step 2: Convert to fraction form
    9,007.20/12,435.12 = 6,178.68/x
  3. Step 3: Cross multiply
    9,007.20x = 12,435.12 × 6,178.68
  4. Step 4: Simplify right side
    9,007.20x = 76,832,627.24
  5. Step 5: Solve for x
    x = 76,832,627.24/9,007.20
  6. Step 6: Final answer
    x = 8,530.13

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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.