Home / 5,409.76-8,115.44-1,711.15

Finding the Fourth Proportional to 5,409.76, 8,115.44 and 1,711.15

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Solution

The fourth proportional to 5,409.76, 8,115.44 and 1,711.15 is: 2,566.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.76 : 8,115.44 = 1,711.15 : x
  2. Step 2: Convert to fraction form
    5,409.76/8,115.44 = 1,711.15/x
  3. Step 3: Cross multiply
    5,409.76x = 8,115.44 × 1,711.15
  4. Step 4: Simplify right side
    5,409.76x = 13,886,726.60
  5. Step 5: Solve for x
    x = 13,886,726.60/5,409.76
  6. Step 6: Final answer
    x = 2,566.98

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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.