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Finding the Fourth Proportional to 2,918.61, 4,008.11 and 2,498.99

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Solution

The fourth proportional to 2,918.61, 4,008.11 and 2,498.99 is: 3,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.61 : 4,008.11 = 2,498.99 : x
  2. Step 2: Convert to fraction form
    2,918.61/4,008.11 = 2,498.99/x
  3. Step 3: Cross multiply
    2,918.61x = 4,008.11 × 2,498.99
  4. Step 4: Simplify right side
    2,918.61x = 10,016,194.27
  5. Step 5: Solve for x
    x = 10,016,194.27/2,918.61
  6. Step 6: Final answer
    x = 3,431.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.