Home / 7,179.84-10,769.76-1,985.76

Finding the Fourth Proportional to 7,179.84, 10,769.76 and 1,985.76

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Solution

The fourth proportional to 7,179.84, 10,769.76 and 1,985.76 is: 2,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.84 : 10,769.76 = 1,985.76 : x
  2. Step 2: Convert to fraction form
    7,179.84/10,769.76 = 1,985.76/x
  3. Step 3: Cross multiply
    7,179.84x = 10,769.76 × 1,985.76
  4. Step 4: Simplify right side
    7,179.84x = 21,386,158.62
  5. Step 5: Solve for x
    x = 21,386,158.62/7,179.84
  6. Step 6: Final answer
    x = 2,978.64

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Similar ratio
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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.