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Finding the Fourth Proportional to 6,571.40, 9,881.40 and 5,502.20

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Solution

The fourth proportional to 6,571.40, 9,881.40 and 5,502.20 is: 8,273.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,571.40 : 9,881.40 = 5,502.20 : x
  2. Step 2: Convert to fraction form
    6,571.40/9,881.40 = 5,502.20/x
  3. Step 3: Cross multiply
    6,571.40x = 9,881.40 × 5,502.20
  4. Step 4: Simplify right side
    6,571.40x = 54,369,439.08
  5. Step 5: Solve for x
    x = 54,369,439.08/6,571.40
  6. Step 6: Final answer
    x = 8,273.65

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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.