Home / 3,869.75-5,350.73-3,807.20

Finding the Fourth Proportional to 3,869.75, 5,350.73 and 3,807.20

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Solution

The fourth proportional to 3,869.75, 5,350.73 and 3,807.20 is: 5,264.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.75 : 5,350.73 = 3,807.20 : x
  2. Step 2: Convert to fraction form
    3,869.75/5,350.73 = 3,807.20/x
  3. Step 3: Cross multiply
    3,869.75x = 5,350.73 × 3,807.20
  4. Step 4: Simplify right side
    3,869.75x = 20,371,293.60
  5. Step 5: Solve for x
    x = 20,371,293.60/3,869.75
  6. Step 6: Final answer
    x = 5,264.24

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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.