Home / 1,871.09-2,581.98-1,031.79

Finding the Fourth Proportional to 1,871.09, 2,581.98 and 1,031.79

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Solution

The fourth proportional to 1,871.09, 2,581.98 and 1,031.79 is: 1,423.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.09 : 2,581.98 = 1,031.79 : x
  2. Step 2: Convert to fraction form
    1,871.09/2,581.98 = 1,031.79/x
  3. Step 3: Cross multiply
    1,871.09x = 2,581.98 × 1,031.79
  4. Step 4: Simplify right side
    1,871.09x = 2,664,066.96
  5. Step 5: Solve for x
    x = 2,664,066.96/1,871.09
  6. Step 6: Final answer
    x = 1,423.81

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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.