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Finding the Fourth Proportional to 5,571.76, 8,355.81 and 1,872.99

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Solution

The fourth proportional to 5,571.76, 8,355.81 and 1,872.99 is: 2,808.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,571.76 : 8,355.81 = 1,872.99 : x
  2. Step 2: Convert to fraction form
    5,571.76/8,355.81 = 1,872.99/x
  3. Step 3: Cross multiply
    5,571.76x = 8,355.81 × 1,872.99
  4. Step 4: Simplify right side
    5,571.76x = 15,650,386.93
  5. Step 5: Solve for x
    x = 15,650,386.93/5,571.76
  6. Step 6: Final answer
    x = 2,808.88

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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.