Home / 3,415.09-5,123.40-1,335.10

Finding the Fourth Proportional to 3,415.09, 5,123.40 and 1,335.10

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Solution

The fourth proportional to 3,415.09, 5,123.40 and 1,335.10 is: 2,002.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.09 : 5,123.40 = 1,335.10 : x
  2. Step 2: Convert to fraction form
    3,415.09/5,123.40 = 1,335.10/x
  3. Step 3: Cross multiply
    3,415.09x = 5,123.40 × 1,335.10
  4. Step 4: Simplify right side
    3,415.09x = 6,840,251.34
  5. Step 5: Solve for x
    x = 6,840,251.34/3,415.09
  6. Step 6: Final answer
    x = 2,002.95

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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.