Home / 1,871.11-2,582.10-1,031.81

Finding the Fourth Proportional to 1,871.11, 2,582.10 and 1,031.81

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Solution

The fourth proportional to 1,871.11, 2,582.10 and 1,031.81 is: 1,423.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.11 : 2,582.10 = 1,031.81 : x
  2. Step 2: Convert to fraction form
    1,871.11/2,582.10 = 1,031.81/x
  3. Step 3: Cross multiply
    1,871.11x = 2,582.10 × 1,031.81
  4. Step 4: Simplify right side
    1,871.11x = 2,664,236.60
  5. Step 5: Solve for x
    x = 2,664,236.60/1,871.11
  6. Step 6: Final answer
    x = 1,423.88

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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.