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Finding the Fourth Proportional to 8,941.88, 12,341.04 and 5,164.28

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Solution

The fourth proportional to 8,941.88, 12,341.04 and 5,164.28 is: 7,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,941.88 : 12,341.04 = 5,164.28 : x
  2. Step 2: Convert to fraction form
    8,941.88/12,341.04 = 5,164.28/x
  3. Step 3: Cross multiply
    8,941.88x = 12,341.04 × 5,164.28
  4. Step 4: Simplify right side
    8,941.88x = 63,732,586.05
  5. Step 5: Solve for x
    x = 63,732,586.05/8,941.88
  6. Step 6: Final answer
    x = 7,127.43

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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.