Home / 3,824.40-5,280.21-2,938.62

Finding the Fourth Proportional to 3,824.40, 5,280.21 and 2,938.62

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Solution

The fourth proportional to 3,824.40, 5,280.21 and 2,938.62 is: 4,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,824.40 : 5,280.21 = 2,938.62 : x
  2. Step 2: Convert to fraction form
    3,824.40/5,280.21 = 2,938.62/x
  3. Step 3: Cross multiply
    3,824.40x = 5,280.21 × 2,938.62
  4. Step 4: Simplify right side
    3,824.40x = 15,516,530.71
  5. Step 5: Solve for x
    x = 15,516,530.71/3,824.40
  6. Step 6: Final answer
    x = 4,057.25

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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.