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Finding the Fourth Proportional to 6,454.40, 8,903.20 and 3,966.08

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Solution

The fourth proportional to 6,454.40, 8,903.20 and 3,966.08 is: 5,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,454.40 : 8,903.20 = 3,966.08 : x
  2. Step 2: Convert to fraction form
    6,454.40/8,903.20 = 3,966.08/x
  3. Step 3: Cross multiply
    6,454.40x = 8,903.20 × 3,966.08
  4. Step 4: Simplify right side
    6,454.40x = 35,310,803.46
  5. Step 5: Solve for x
    x = 35,310,803.46/6,454.40
  6. Step 6: Final answer
    x = 5,470.81

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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.