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Finding the Fourth Proportional to 2,479.01, 3,718.58 and 747.63

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Solution

The fourth proportional to 2,479.01, 3,718.58 and 747.63 is: 1,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.01 : 3,718.58 = 747.63 : x
  2. Step 2: Convert to fraction form
    2,479.01/3,718.58 = 747.63/x
  3. Step 3: Cross multiply
    2,479.01x = 3,718.58 × 747.63
  4. Step 4: Simplify right side
    2,479.01x = 2,780,118.23
  5. Step 5: Solve for x
    x = 2,780,118.23/2,479.01
  6. Step 6: Final answer
    x = 1,121.47

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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.