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Finding the Fourth Proportional to 2,398.95, 3,599.30 and 839.19

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Solution

The fourth proportional to 2,398.95, 3,599.30 and 839.19 is: 1,259.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,398.95 : 3,599.30 = 839.19 : x
  2. Step 2: Convert to fraction form
    2,398.95/3,599.30 = 839.19/x
  3. Step 3: Cross multiply
    2,398.95x = 3,599.30 × 839.19
  4. Step 4: Simplify right side
    2,398.95x = 3,020,492.37
  5. Step 5: Solve for x
    x = 3,020,492.37/2,398.95
  6. Step 6: Final answer
    x = 1,259.09

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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.