Home / 3,188.32-4,399.68-1,862.40

Finding the Fourth Proportional to 3,188.32, 4,399.68 and 1,862.40

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Solution

The fourth proportional to 3,188.32, 4,399.68 and 1,862.40 is: 2,569.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.32 : 4,399.68 = 1,862.40 : x
  2. Step 2: Convert to fraction form
    3,188.32/4,399.68 = 1,862.40/x
  3. Step 3: Cross multiply
    3,188.32x = 4,399.68 × 1,862.40
  4. Step 4: Simplify right side
    3,188.32x = 8,193,964.03
  5. Step 5: Solve for x
    x = 8,193,964.03/3,188.32
  6. Step 6: Final answer
    x = 2,569.99

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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.