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Finding the Fourth Proportional to 7,173.90, 9,895.98 and 6,666.49

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Solution

The fourth proportional to 7,173.90, 9,895.98 and 6,666.49 is: 9,196.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.90 : 9,895.98 = 6,666.49 : x
  2. Step 2: Convert to fraction form
    7,173.90/9,895.98 = 6,666.49/x
  3. Step 3: Cross multiply
    7,173.90x = 9,895.98 × 6,666.49
  4. Step 4: Simplify right side
    7,173.90x = 65,971,451.71
  5. Step 5: Solve for x
    x = 65,971,451.71/7,173.90
  6. Step 6: Final answer
    x = 9,196.04

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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.