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Finding the Fourth Proportional to 6,881.61, 9,491.34 and 4,639.94

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Solution

The fourth proportional to 6,881.61, 9,491.34 and 4,639.94 is: 6,399.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,881.61 : 9,491.34 = 4,639.94 : x
  2. Step 2: Convert to fraction form
    6,881.61/9,491.34 = 4,639.94/x
  3. Step 3: Cross multiply
    6,881.61x = 9,491.34 × 4,639.94
  4. Step 4: Simplify right side
    6,881.61x = 44,039,248.12
  5. Step 5: Solve for x
    x = 44,039,248.12/6,881.61
  6. Step 6: Final answer
    x = 6,399.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.