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Finding the Fourth Proportional to 7,871.04, 11,817.36 and 4,955.04

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Solution

The fourth proportional to 7,871.04, 11,817.36 and 4,955.04 is: 7,439.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.04 : 11,817.36 = 4,955.04 : x
  2. Step 2: Convert to fraction form
    7,871.04/11,817.36 = 4,955.04/x
  3. Step 3: Cross multiply
    7,871.04x = 11,817.36 × 4,955.04
  4. Step 4: Simplify right side
    7,871.04x = 58,555,491.49
  5. Step 5: Solve for x
    x = 58,555,491.49/7,871.04
  6. Step 6: Final answer
    x = 7,439.36

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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.