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Finding the Fourth Proportional to 7,871.36, 11,805.67 and 2,941.04

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Solution

The fourth proportional to 7,871.36, 11,805.67 and 2,941.04 is: 4,411.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.36 : 11,805.67 = 2,941.04 : x
  2. Step 2: Convert to fraction form
    7,871.36/11,805.67 = 2,941.04/x
  3. Step 3: Cross multiply
    7,871.36x = 11,805.67 × 2,941.04
  4. Step 4: Simplify right side
    7,871.36x = 34,720,969.86
  5. Step 5: Solve for x
    x = 34,720,969.86/7,871.36
  6. Step 6: Final answer
    x = 4,411.05

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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.