Home / 2,839.18-4,259.50-891.40

Finding the Fourth Proportional to 2,839.18, 4,259.50 and 891.40

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Solution

The fourth proportional to 2,839.18, 4,259.50 and 891.40 is: 1,337.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.18 : 4,259.50 = 891.40 : x
  2. Step 2: Convert to fraction form
    2,839.18/4,259.50 = 891.40/x
  3. Step 3: Cross multiply
    2,839.18x = 4,259.50 × 891.40
  4. Step 4: Simplify right side
    2,839.18x = 3,796,918.30
  5. Step 5: Solve for x
    x = 3,796,918.30/2,839.18
  6. Step 6: Final answer
    x = 1,337.33

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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.