Home / 6,380.79-8,802.25-4,143.90

Finding the Fourth Proportional to 6,380.79, 8,802.25 and 4,143.90

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Solution

The fourth proportional to 6,380.79, 8,802.25 and 4,143.90 is: 5,716.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,380.79 : 8,802.25 = 4,143.90 : x
  2. Step 2: Convert to fraction form
    6,380.79/8,802.25 = 4,143.90/x
  3. Step 3: Cross multiply
    6,380.79x = 8,802.25 × 4,143.90
  4. Step 4: Simplify right side
    6,380.79x = 36,475,666.42
  5. Step 5: Solve for x
    x = 36,475,666.42/6,380.79
  6. Step 6: Final answer
    x = 5,716.48

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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.