Home / 7,325.14-10,987.68-1,778.47

Finding the Fourth Proportional to 7,325.14, 10,987.68 and 1,778.47

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Solution

The fourth proportional to 7,325.14, 10,987.68 and 1,778.47 is: 2,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,325.14 : 10,987.68 = 1,778.47 : x
  2. Step 2: Convert to fraction form
    7,325.14/10,987.68 = 1,778.47/x
  3. Step 3: Cross multiply
    7,325.14x = 10,987.68 × 1,778.47
  4. Step 4: Simplify right side
    7,325.14x = 19,541,259.25
  5. Step 5: Solve for x
    x = 19,541,259.25/7,325.14
  6. Step 6: Final answer
    x = 2,667.70

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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.