Home / 9,111.27-13,667.40-2,871.77

Finding the Fourth Proportional to 9,111.27, 13,667.40 and 2,871.77

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Solution

The fourth proportional to 9,111.27, 13,667.40 and 2,871.77 is: 4,307.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.27 : 13,667.40 = 2,871.77 : x
  2. Step 2: Convert to fraction form
    9,111.27/13,667.40 = 2,871.77/x
  3. Step 3: Cross multiply
    9,111.27x = 13,667.40 × 2,871.77
  4. Step 4: Simplify right side
    9,111.27x = 39,249,629.30
  5. Step 5: Solve for x
    x = 39,249,629.30/9,111.27
  6. Step 6: Final answer
    x = 4,307.81

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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.