Home / 2,988.58-4,481.70-1,139.08

Finding the Fourth Proportional to 2,988.58, 4,481.70 and 1,139.08

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Solution

The fourth proportional to 2,988.58, 4,481.70 and 1,139.08 is: 1,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.58 : 4,481.70 = 1,139.08 : x
  2. Step 2: Convert to fraction form
    2,988.58/4,481.70 = 1,139.08/x
  3. Step 3: Cross multiply
    2,988.58x = 4,481.70 × 1,139.08
  4. Step 4: Simplify right side
    2,988.58x = 5,105,014.84
  5. Step 5: Solve for x
    x = 5,105,014.84/2,988.58
  6. Step 6: Final answer
    x = 1,708.17

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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.