Home / 7,181.52-10,771.98-1,987.26

Finding the Fourth Proportional to 7,181.52, 10,771.98 and 1,987.26

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Solution

The fourth proportional to 7,181.52, 10,771.98 and 1,987.26 is: 2,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.52 : 10,771.98 = 1,987.26 : x
  2. Step 2: Convert to fraction form
    7,181.52/10,771.98 = 1,987.26/x
  3. Step 3: Cross multiply
    7,181.52x = 10,771.98 × 1,987.26
  4. Step 4: Simplify right side
    7,181.52x = 21,406,724.97
  5. Step 5: Solve for x
    x = 21,406,724.97/7,181.52
  6. Step 6: Final answer
    x = 2,980.81

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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.