Home / 7,109.11-10,666.02-2,178.80

Finding the Fourth Proportional to 7,109.11, 10,666.02 and 2,178.80

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Solution

The fourth proportional to 7,109.11, 10,666.02 and 2,178.80 is: 3,268.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.11 : 10,666.02 = 2,178.80 : x
  2. Step 2: Convert to fraction form
    7,109.11/10,666.02 = 2,178.80/x
  3. Step 3: Cross multiply
    7,109.11x = 10,666.02 × 2,178.80
  4. Step 4: Simplify right side
    7,109.11x = 23,239,124.38
  5. Step 5: Solve for x
    x = 23,239,124.38/7,109.11
  6. Step 6: Final answer
    x = 3,268.92

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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.