Home / 6,380.28-8,806.05-4,139.01

Finding the Fourth Proportional to 6,380.28, 8,806.05 and 4,139.01

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Solution

The fourth proportional to 6,380.28, 8,806.05 and 4,139.01 is: 5,712.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,380.28 : 8,806.05 = 4,139.01 : x
  2. Step 2: Convert to fraction form
    6,380.28/8,806.05 = 4,139.01/x
  3. Step 3: Cross multiply
    6,380.28x = 8,806.05 × 4,139.01
  4. Step 4: Simplify right side
    6,380.28x = 36,448,329.01
  5. Step 5: Solve for x
    x = 36,448,329.01/6,380.28
  6. Step 6: Final answer
    x = 5,712.65

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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.