Home / 2,127.51-3,191.27-667.08

Finding the Fourth Proportional to 2,127.51, 3,191.27 and 667.08

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Solution

The fourth proportional to 2,127.51, 3,191.27 and 667.08 is: 1,000.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.51 : 3,191.27 = 667.08 : x
  2. Step 2: Convert to fraction form
    2,127.51/3,191.27 = 667.08/x
  3. Step 3: Cross multiply
    2,127.51x = 3,191.27 × 667.08
  4. Step 4: Simplify right side
    2,127.51x = 2,128,829.06
  5. Step 5: Solve for x
    x = 2,128,829.06/2,127.51
  6. Step 6: Final answer
    x = 1,000.62

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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.