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Finding the Fourth Proportional to 2,913.47, 4,370.89 and 965.67

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Solution

The fourth proportional to 2,913.47, 4,370.89 and 965.67 is: 1,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.47 : 4,370.89 = 965.67 : x
  2. Step 2: Convert to fraction form
    2,913.47/4,370.89 = 965.67/x
  3. Step 3: Cross multiply
    2,913.47x = 4,370.89 × 965.67
  4. Step 4: Simplify right side
    2,913.47x = 4,220,842.22
  5. Step 5: Solve for x
    x = 4,220,842.22/2,913.47
  6. Step 6: Final answer
    x = 1,448.73

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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.