Home / 5,231.50-7,836.78-3,150.40

Finding the Fourth Proportional to 5,231.50, 7,836.78 and 3,150.40

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Solution

The fourth proportional to 5,231.50, 7,836.78 and 3,150.40 is: 4,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.50 : 7,836.78 = 3,150.40 : x
  2. Step 2: Convert to fraction form
    5,231.50/7,836.78 = 3,150.40/x
  3. Step 3: Cross multiply
    5,231.50x = 7,836.78 × 3,150.40
  4. Step 4: Simplify right side
    5,231.50x = 24,688,991.71
  5. Step 5: Solve for x
    x = 24,688,991.71/5,231.50
  6. Step 6: Final answer
    x = 4,719.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.