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Finding the Fourth Proportional to 2,659.96, 3,989.94 and 1,488.70

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Solution

The fourth proportional to 2,659.96, 3,989.94 and 1,488.70 is: 2,233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.96 : 3,989.94 = 1,488.70 : x
  2. Step 2: Convert to fraction form
    2,659.96/3,989.94 = 1,488.70/x
  3. Step 3: Cross multiply
    2,659.96x = 3,989.94 × 1,488.70
  4. Step 4: Simplify right side
    2,659.96x = 5,939,823.68
  5. Step 5: Solve for x
    x = 5,939,823.68/2,659.96
  6. Step 6: Final answer
    x = 2,233.05

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Similar ratio
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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.