Home / 3,972.87-5,485.10-2,557.10

Finding the Fourth Proportional to 3,972.87, 5,485.10 and 2,557.10

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Solution

The fourth proportional to 3,972.87, 5,485.10 and 2,557.10 is: 3,530.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.87 : 5,485.10 = 2,557.10 : x
  2. Step 2: Convert to fraction form
    3,972.87/5,485.10 = 2,557.10/x
  3. Step 3: Cross multiply
    3,972.87x = 5,485.10 × 2,557.10
  4. Step 4: Simplify right side
    3,972.87x = 14,025,950.14
  5. Step 5: Solve for x
    x = 14,025,950.14/3,972.87
  6. Step 6: Final answer
    x = 3,530.43

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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.