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Finding the Fourth Proportional to 3,812.76, 5,721.10 and 2,888.01

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Solution

The fourth proportional to 3,812.76, 5,721.10 and 2,888.01 is: 4,333.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.76 : 5,721.10 = 2,888.01 : x
  2. Step 2: Convert to fraction form
    3,812.76/5,721.10 = 2,888.01/x
  3. Step 3: Cross multiply
    3,812.76x = 5,721.10 × 2,888.01
  4. Step 4: Simplify right side
    3,812.76x = 16,522,586.79
  5. Step 5: Solve for x
    x = 16,522,586.79/3,812.76
  6. Step 6: Final answer
    x = 4,333.50

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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.