Home / 8,140.28-11,231.70-5,624.60

Finding the Fourth Proportional to 8,140.28, 11,231.70 and 5,624.60

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Solution

The fourth proportional to 8,140.28, 11,231.70 and 5,624.60 is: 7,760.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.28 : 11,231.70 = 5,624.60 : x
  2. Step 2: Convert to fraction form
    8,140.28/11,231.70 = 5,624.60/x
  3. Step 3: Cross multiply
    8,140.28x = 11,231.70 × 5,624.60
  4. Step 4: Simplify right side
    8,140.28x = 63,173,819.82
  5. Step 5: Solve for x
    x = 63,173,819.82/8,140.28
  6. Step 6: Final answer
    x = 7,760.64

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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.