Home / 2,988.71-4,478.96-1,891.11

Finding the Fourth Proportional to 2,988.71, 4,478.96 and 1,891.11

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Solution

The fourth proportional to 2,988.71, 4,478.96 and 1,891.11 is: 2,834.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.71 : 4,478.96 = 1,891.11 : x
  2. Step 2: Convert to fraction form
    2,988.71/4,478.96 = 1,891.11/x
  3. Step 3: Cross multiply
    2,988.71x = 4,478.96 × 1,891.11
  4. Step 4: Simplify right side
    2,988.71x = 8,470,227.57
  5. Step 5: Solve for x
    x = 8,470,227.57/2,988.71
  6. Step 6: Final answer
    x = 2,834.08

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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.