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Finding the Fourth Proportional to 4,881.70, 7,323.90 and 2,109.70

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Solution

The fourth proportional to 4,881.70, 7,323.90 and 2,109.70 is: 3,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.70 : 7,323.90 = 2,109.70 : x
  2. Step 2: Convert to fraction form
    4,881.70/7,323.90 = 2,109.70/x
  3. Step 3: Cross multiply
    4,881.70x = 7,323.90 × 2,109.70
  4. Step 4: Simplify right side
    4,881.70x = 15,451,231.83
  5. Step 5: Solve for x
    x = 15,451,231.83/4,881.70
  6. Step 6: Final answer
    x = 3,165.13

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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.