Home / 2,172.48-2,997.12-1,240.32

Finding the Fourth Proportional to 2,172.48, 2,997.12 and 1,240.32

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Solution

The fourth proportional to 2,172.48, 2,997.12 and 1,240.32 is: 1,711.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.48 : 2,997.12 = 1,240.32 : x
  2. Step 2: Convert to fraction form
    2,172.48/2,997.12 = 1,240.32/x
  3. Step 3: Cross multiply
    2,172.48x = 2,997.12 × 1,240.32
  4. Step 4: Simplify right side
    2,172.48x = 3,717,387.88
  5. Step 5: Solve for x
    x = 3,717,387.88/2,172.48
  6. Step 6: Final answer
    x = 1,711.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.