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Finding the Fourth Proportional to 2,527.58, 3,789.21 and 989.66

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Solution

The fourth proportional to 2,527.58, 3,789.21 and 989.66 is: 1,483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,527.58 : 3,789.21 = 989.66 : x
  2. Step 2: Convert to fraction form
    2,527.58/3,789.21 = 989.66/x
  3. Step 3: Cross multiply
    2,527.58x = 3,789.21 × 989.66
  4. Step 4: Simplify right side
    2,527.58x = 3,750,029.57
  5. Step 5: Solve for x
    x = 3,750,029.57/2,527.58
  6. Step 6: Final answer
    x = 1,483.64

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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.