Home / 9,111.60-13,667.94-2,871.81

Finding the Fourth Proportional to 9,111.60, 13,667.94 and 2,871.81

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Solution

The fourth proportional to 9,111.60, 13,667.94 and 2,871.81 is: 4,307.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.60 : 13,667.94 = 2,871.81 : x
  2. Step 2: Convert to fraction form
    9,111.60/13,667.94 = 2,871.81/x
  3. Step 3: Cross multiply
    9,111.60x = 13,667.94 × 2,871.81
  4. Step 4: Simplify right side
    9,111.60x = 39,251,726.77
  5. Step 5: Solve for x
    x = 39,251,726.77/9,111.60
  6. Step 6: Final answer
    x = 4,307.89

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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.