Home / 3,807.20-5,712.50-2,420.16

Finding the Fourth Proportional to 3,807.20, 5,712.50 and 2,420.16

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Solution

The fourth proportional to 3,807.20, 5,712.50 and 2,420.16 is: 3,631.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.20 : 5,712.50 = 2,420.16 : x
  2. Step 2: Convert to fraction form
    3,807.20/5,712.50 = 2,420.16/x
  3. Step 3: Cross multiply
    3,807.20x = 5,712.50 × 2,420.16
  4. Step 4: Simplify right side
    3,807.20x = 13,825,151.90
  5. Step 5: Solve for x
    x = 13,825,151.90/3,807.20
  6. Step 6: Final answer
    x = 3,631.32

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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.