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Finding the Fourth Proportional to 1,998.95, 2,999.15 and 902.48

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Solution

The fourth proportional to 1,998.95, 2,999.15 and 902.48 is: 1,354.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.95 : 2,999.15 = 902.48 : x
  2. Step 2: Convert to fraction form
    1,998.95/2,999.15 = 902.48/x
  3. Step 3: Cross multiply
    1,998.95x = 2,999.15 × 902.48
  4. Step 4: Simplify right side
    1,998.95x = 2,706,668.38
  5. Step 5: Solve for x
    x = 2,706,668.38/1,998.95
  6. Step 6: Final answer
    x = 1,354.05

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1.5x scale

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.