Home / 7,182.50-10,774.38-1,988.42

Finding the Fourth Proportional to 7,182.50, 10,774.38 and 1,988.42

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Solution

The fourth proportional to 7,182.50, 10,774.38 and 1,988.42 is: 2,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.50 : 10,774.38 = 1,988.42 : x
  2. Step 2: Convert to fraction form
    7,182.50/10,774.38 = 1,988.42/x
  3. Step 3: Cross multiply
    7,182.50x = 10,774.38 × 1,988.42
  4. Step 4: Simplify right side
    7,182.50x = 21,423,992.68
  5. Step 5: Solve for x
    x = 21,423,992.68/7,182.50
  6. Step 6: Final answer
    x = 2,982.80

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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.