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Finding the Fourth Proportional to 8,871.48, 13,302.78 and 4,974.84

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Solution

The fourth proportional to 8,871.48, 13,302.78 and 4,974.84 is: 7,459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.48 : 13,302.78 = 4,974.84 : x
  2. Step 2: Convert to fraction form
    8,871.48/13,302.78 = 4,974.84/x
  3. Step 3: Cross multiply
    8,871.48x = 13,302.78 × 4,974.84
  4. Step 4: Simplify right side
    8,871.48x = 66,179,202.06
  5. Step 5: Solve for x
    x = 66,179,202.06/8,871.48
  6. Step 6: Final answer
    x = 7,459.77

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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.