Home / 3,411.65-5,115.76-1,330.05

Finding the Fourth Proportional to 3,411.65, 5,115.76 and 1,330.05

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Solution

The fourth proportional to 3,411.65, 5,115.76 and 1,330.05 is: 1,994.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.65 : 5,115.76 = 1,330.05 : x
  2. Step 2: Convert to fraction form
    3,411.65/5,115.76 = 1,330.05/x
  3. Step 3: Cross multiply
    3,411.65x = 5,115.76 × 1,330.05
  4. Step 4: Simplify right side
    3,411.65x = 6,804,232.45
  5. Step 5: Solve for x
    x = 6,804,232.45/3,411.65
  6. Step 6: Final answer
    x = 1,994.41

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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.