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Finding the Fourth Proportional to 7,195.80, 9,929.46 and 6,666.66

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Solution

The fourth proportional to 7,195.80, 9,929.46 and 6,666.66 is: 9,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,195.80 : 9,929.46 = 6,666.66 : x
  2. Step 2: Convert to fraction form
    7,195.80/9,929.46 = 6,666.66/x
  3. Step 3: Cross multiply
    7,195.80x = 9,929.46 × 6,666.66
  4. Step 4: Simplify right side
    7,195.80x = 66,196,333.80
  5. Step 5: Solve for x
    x = 66,196,333.80/7,195.80
  6. Step 6: Final answer
    x = 9,199.30

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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.