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Finding the Fourth Proportional to 7,184.52, 10,776.76 and 1,990.36

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Solution

The fourth proportional to 7,184.52, 10,776.76 and 1,990.36 is: 2,985.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,184.52 : 10,776.76 = 1,990.36 : x
  2. Step 2: Convert to fraction form
    7,184.52/10,776.76 = 1,990.36/x
  3. Step 3: Cross multiply
    7,184.52x = 10,776.76 × 1,990.36
  4. Step 4: Simplify right side
    7,184.52x = 21,449,632.03
  5. Step 5: Solve for x
    x = 21,449,632.03/7,184.52
  6. Step 6: Final answer
    x = 2,985.53

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Double scale
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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.