Home / 2,990.40-4,486.08-1,141.44

Finding the Fourth Proportional to 2,990.40, 4,486.08 and 1,141.44

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Solution

The fourth proportional to 2,990.40, 4,486.08 and 1,141.44 is: 1,712.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.40 : 4,486.08 = 1,141.44 : x
  2. Step 2: Convert to fraction form
    2,990.40/4,486.08 = 1,141.44/x
  3. Step 3: Cross multiply
    2,990.40x = 4,486.08 × 1,141.44
  4. Step 4: Simplify right side
    2,990.40x = 5,120,591.16
  5. Step 5: Solve for x
    x = 5,120,591.16/2,990.40
  6. Step 6: Final answer
    x = 1,712.34

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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.