Home / 8,316.23-11,475.72-4,778.78

Finding the Fourth Proportional to 8,316.23, 11,475.72 and 4,778.78

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Solution

The fourth proportional to 8,316.23, 11,475.72 and 4,778.78 is: 6,594.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.23 : 11,475.72 = 4,778.78 : x
  2. Step 2: Convert to fraction form
    8,316.23/11,475.72 = 4,778.78/x
  3. Step 3: Cross multiply
    8,316.23x = 11,475.72 × 4,778.78
  4. Step 4: Simplify right side
    8,316.23x = 54,839,883.84
  5. Step 5: Solve for x
    x = 54,839,883.84/8,316.23
  6. Step 6: Final answer
    x = 6,594.32

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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.