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Finding the Fourth Proportional to 2,988.95, 4,483.41 and 908.94

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Solution

The fourth proportional to 2,988.95, 4,483.41 and 908.94 is: 1,363.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.95 : 4,483.41 = 908.94 : x
  2. Step 2: Convert to fraction form
    2,988.95/4,483.41 = 908.94/x
  3. Step 3: Cross multiply
    2,988.95x = 4,483.41 × 908.94
  4. Step 4: Simplify right side
    2,988.95x = 4,075,150.69
  5. Step 5: Solve for x
    x = 4,075,150.69/2,988.95
  6. Step 6: Final answer
    x = 1,363.41

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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.