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Finding the Fourth Proportional to 2,924.99, 4,387.49 and 872.99

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Solution

The fourth proportional to 2,924.99, 4,387.49 and 872.99 is: 1,309.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,924.99 : 4,387.49 = 872.99 : x
  2. Step 2: Convert to fraction form
    2,924.99/4,387.49 = 872.99/x
  3. Step 3: Cross multiply
    2,924.99x = 4,387.49 × 872.99
  4. Step 4: Simplify right side
    2,924.99x = 3,830,234.90
  5. Step 5: Solve for x
    x = 3,830,234.90/2,924.99
  6. Step 6: Final answer
    x = 1,309.49

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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.