Home / 9,078.62-13,621.85-4,921.61

Finding the Fourth Proportional to 9,078.62, 13,621.85 and 4,921.61

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Solution

The fourth proportional to 9,078.62, 13,621.85 and 4,921.61 is: 7,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.62 : 13,621.85 = 4,921.61 : x
  2. Step 2: Convert to fraction form
    9,078.62/13,621.85 = 4,921.61/x
  3. Step 3: Cross multiply
    9,078.62x = 13,621.85 × 4,921.61
  4. Step 4: Simplify right side
    9,078.62x = 67,041,340.46
  5. Step 5: Solve for x
    x = 67,041,340.46/9,078.62
  6. Step 6: Final answer
    x = 7,384.53

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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.