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Finding the Fourth Proportional to 2,449.95, 3,674.90 and 989.08

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Solution

The fourth proportional to 2,449.95, 3,674.90 and 989.08 is: 1,483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.95 : 3,674.90 = 989.08 : x
  2. Step 2: Convert to fraction form
    2,449.95/3,674.90 = 989.08/x
  3. Step 3: Cross multiply
    2,449.95x = 3,674.90 × 989.08
  4. Step 4: Simplify right side
    2,449.95x = 3,634,763.38
  5. Step 5: Solve for x
    x = 3,634,763.38/2,449.95
  6. Step 6: Final answer
    x = 1,483.61

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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.