Home / 2,142.36-3,215.04-844.20

Finding the Fourth Proportional to 2,142.36, 3,215.04 and 844.20

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Solution

The fourth proportional to 2,142.36, 3,215.04 and 844.20 is: 1,266.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.36 : 3,215.04 = 844.20 : x
  2. Step 2: Convert to fraction form
    2,142.36/3,215.04 = 844.20/x
  3. Step 3: Cross multiply
    2,142.36x = 3,215.04 × 844.20
  4. Step 4: Simplify right side
    2,142.36x = 2,714,136.77
  5. Step 5: Solve for x
    x = 2,714,136.77/2,142.36
  6. Step 6: Final answer
    x = 1,266.89

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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.