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Finding the Fourth Proportional to 2,564.60, 3,846.89 and 616.80

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Solution

The fourth proportional to 2,564.60, 3,846.89 and 616.80 is: 925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,564.60 : 3,846.89 = 616.80 : x
  2. Step 2: Convert to fraction form
    2,564.60/3,846.89 = 616.80/x
  3. Step 3: Cross multiply
    2,564.60x = 3,846.89 × 616.80
  4. Step 4: Simplify right side
    2,564.60x = 2,372,756.08
  5. Step 5: Solve for x
    x = 2,372,756.08/2,564.60
  6. Step 6: Final answer
    x = 925.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.