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Finding the Fourth Proportional to 2,988.81, 4,479.99 and 1,893.48

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Solution

The fourth proportional to 2,988.81, 4,479.99 and 1,893.48 is: 2,838.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.81 : 4,479.99 = 1,893.48 : x
  2. Step 2: Convert to fraction form
    2,988.81/4,479.99 = 1,893.48/x
  3. Step 3: Cross multiply
    2,988.81x = 4,479.99 × 1,893.48
  4. Step 4: Simplify right side
    2,988.81x = 8,482,771.47
  5. Step 5: Solve for x
    x = 8,482,771.47/2,988.81
  6. Step 6: Final answer
    x = 2,838.18

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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.