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Finding the Fourth Proportional to 8,711.10, 12,021.93 and 4,934.34

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Solution

The fourth proportional to 8,711.10, 12,021.93 and 4,934.34 is: 6,809.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.10 : 12,021.93 = 4,934.34 : x
  2. Step 2: Convert to fraction form
    8,711.10/12,021.93 = 4,934.34/x
  3. Step 3: Cross multiply
    8,711.10x = 12,021.93 × 4,934.34
  4. Step 4: Simplify right side
    8,711.10x = 59,320,290.08
  5. Step 5: Solve for x
    x = 59,320,290.08/8,711.10
  6. Step 6: Final answer
    x = 6,809.74

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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.