Home / 2,127.12-2,933.87-1,242.87

Finding the Fourth Proportional to 2,127.12, 2,933.87 and 1,242.87

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Solution

The fourth proportional to 2,127.12, 2,933.87 and 1,242.87 is: 1,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.12 : 2,933.87 = 1,242.87 : x
  2. Step 2: Convert to fraction form
    2,127.12/2,933.87 = 1,242.87/x
  3. Step 3: Cross multiply
    2,127.12x = 2,933.87 × 1,242.87
  4. Step 4: Simplify right side
    2,127.12x = 3,646,412.79
  5. Step 5: Solve for x
    x = 3,646,412.79/2,127.12
  6. Step 6: Final answer
    x = 1,714.25

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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.