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Finding the Fourth Proportional to 3,953.22, 5,929.20 and 1,487.70

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Solution

The fourth proportional to 3,953.22, 5,929.20 and 1,487.70 is: 2,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.22 : 5,929.20 = 1,487.70 : x
  2. Step 2: Convert to fraction form
    3,953.22/5,929.20 = 1,487.70/x
  3. Step 3: Cross multiply
    3,953.22x = 5,929.20 × 1,487.70
  4. Step 4: Simplify right side
    3,953.22x = 8,820,870.84
  5. Step 5: Solve for x
    x = 8,820,870.84/3,953.22
  6. Step 6: Final answer
    x = 2,231.31

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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.