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Finding the Fourth Proportional to 6,423.84, 8,869.28 and 4,860.48

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Solution

The fourth proportional to 6,423.84, 8,869.28 and 4,860.48 is: 6,710.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.84 : 8,869.28 = 4,860.48 : x
  2. Step 2: Convert to fraction form
    6,423.84/8,869.28 = 4,860.48/x
  3. Step 3: Cross multiply
    6,423.84x = 8,869.28 × 4,860.48
  4. Step 4: Simplify right side
    6,423.84x = 43,108,958.05
  5. Step 5: Solve for x
    x = 43,108,958.05/6,423.84
  6. Step 6: Final answer
    x = 6,710.78

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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.