Home / 5,311.09-7,966.62-1,415.50

Finding the Fourth Proportional to 5,311.09, 7,966.62 and 1,415.50

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Solution

The fourth proportional to 5,311.09, 7,966.62 and 1,415.50 is: 2,123.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.09 : 7,966.62 = 1,415.50 : x
  2. Step 2: Convert to fraction form
    5,311.09/7,966.62 = 1,415.50/x
  3. Step 3: Cross multiply
    5,311.09x = 7,966.62 × 1,415.50
  4. Step 4: Simplify right side
    5,311.09x = 11,276,750.61
  5. Step 5: Solve for x
    x = 11,276,750.61/5,311.09
  6. Step 6: Final answer
    x = 2,123.25

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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.