Home / 9,188.81-13,778.95-2,947.42

Finding the Fourth Proportional to 9,188.81, 13,778.95 and 2,947.42

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Solution

The fourth proportional to 9,188.81, 13,778.95 and 2,947.42 is: 4,419.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,188.81 : 13,778.95 = 2,947.42 : x
  2. Step 2: Convert to fraction form
    9,188.81/13,778.95 = 2,947.42/x
  3. Step 3: Cross multiply
    9,188.81x = 13,778.95 × 2,947.42
  4. Step 4: Simplify right side
    9,188.81x = 40,612,352.81
  5. Step 5: Solve for x
    x = 40,612,352.81/9,188.81
  6. Step 6: Final answer
    x = 4,419.76

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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.