Home / 8,757.28-12,084.60-4,778.20

Finding the Fourth Proportional to 8,757.28, 12,084.60 and 4,778.20

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Solution

The fourth proportional to 8,757.28, 12,084.60 and 4,778.20 is: 6,593.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.28 : 12,084.60 = 4,778.20 : x
  2. Step 2: Convert to fraction form
    8,757.28/12,084.60 = 4,778.20/x
  3. Step 3: Cross multiply
    8,757.28x = 12,084.60 × 4,778.20
  4. Step 4: Simplify right side
    8,757.28x = 57,742,635.72
  5. Step 5: Solve for x
    x = 57,742,635.72/8,757.28
  6. Step 6: Final answer
    x = 6,593.67

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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.