Home / 9,278.32-12,785.60-6,618.24

Finding the Fourth Proportional to 9,278.32, 12,785.60 and 6,618.24

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Solution

The fourth proportional to 9,278.32, 12,785.60 and 6,618.24 is: 9,119.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.32 : 12,785.60 = 6,618.24 : x
  2. Step 2: Convert to fraction form
    9,278.32/12,785.60 = 6,618.24/x
  3. Step 3: Cross multiply
    9,278.32x = 12,785.60 × 6,618.24
  4. Step 4: Simplify right side
    9,278.32x = 84,618,169.34
  5. Step 5: Solve for x
    x = 84,618,169.34/9,278.32
  6. Step 6: Final answer
    x = 9,119.99

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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.