Home / 10,860.40-16,289.94-3,840.76

Finding the Fourth Proportional to 10,860.40, 16,289.94 and 3,840.76

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Solution

The fourth proportional to 10,860.40, 16,289.94 and 3,840.76 is: 5,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860.40 : 16,289.94 = 3,840.76 : x
  2. Step 2: Convert to fraction form
    10,860.40/16,289.94 = 3,840.76/x
  3. Step 3: Cross multiply
    10,860.40x = 16,289.94 × 3,840.76
  4. Step 4: Simplify right side
    10,860.40x = 62,565,749.95
  5. Step 5: Solve for x
    x = 62,565,749.95/10,860.40
  6. Step 6: Final answer
    x = 5,760.91

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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.