Home / 2,291.65-3,438.52-1,415.50

Finding the Fourth Proportional to 2,291.65, 3,438.52 and 1,415.50

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Solution

The fourth proportional to 2,291.65, 3,438.52 and 1,415.50 is: 2,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.65 : 3,438.52 = 1,415.50 : x
  2. Step 2: Convert to fraction form
    2,291.65/3,438.52 = 1,415.50/x
  3. Step 3: Cross multiply
    2,291.65x = 3,438.52 × 1,415.50
  4. Step 4: Simplify right side
    2,291.65x = 4,867,212.92
  5. Step 5: Solve for x
    x = 4,867,212.92/2,291.65
  6. Step 6: Final answer
    x = 2,123.89

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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.