Home / 1,871.19-2,801.76-1,047.12

Finding the Fourth Proportional to 1,871.19, 2,801.76 and 1,047.12

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Solution

The fourth proportional to 1,871.19, 2,801.76 and 1,047.12 is: 1,567.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.19 : 2,801.76 = 1,047.12 : x
  2. Step 2: Convert to fraction form
    1,871.19/2,801.76 = 1,047.12/x
  3. Step 3: Cross multiply
    1,871.19x = 2,801.76 × 1,047.12
  4. Step 4: Simplify right side
    1,871.19x = 2,933,770.39
  5. Step 5: Solve for x
    x = 2,933,770.39/1,871.19
  6. Step 6: Final answer
    x = 1,567.86

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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.