Home / 8,299.60-11,452.80-5,155.20

Finding the Fourth Proportional to 8,299.60, 11,452.80 and 5,155.20

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Solution

The fourth proportional to 8,299.60, 11,452.80 and 5,155.20 is: 7,113.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,299.60 : 11,452.80 = 5,155.20 : x
  2. Step 2: Convert to fraction form
    8,299.60/11,452.80 = 5,155.20/x
  3. Step 3: Cross multiply
    8,299.60x = 11,452.80 × 5,155.20
  4. Step 4: Simplify right side
    8,299.60x = 59,041,474.56
  5. Step 5: Solve for x
    x = 59,041,474.56/8,299.60
  6. Step 6: Final answer
    x = 7,113.77

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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.