Home / 1,396.20-2,094.65-986.13

Finding the Fourth Proportional to 1,396.20, 2,094.65 and 986.13

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Solution

The fourth proportional to 1,396.20, 2,094.65 and 986.13 is: 1,479.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.20 : 2,094.65 = 986.13 : x
  2. Step 2: Convert to fraction form
    1,396.20/2,094.65 = 986.13/x
  3. Step 3: Cross multiply
    1,396.20x = 2,094.65 × 986.13
  4. Step 4: Simplify right side
    1,396.20x = 2,065,592.27
  5. Step 5: Solve for x
    x = 2,065,592.27/1,396.20
  6. Step 6: Final answer
    x = 1,479.44

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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.