Home / 1,611.48-2,223.67-939.30

Finding the Fourth Proportional to 1,611.48, 2,223.67 and 939.30

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Solution

The fourth proportional to 1,611.48, 2,223.67 and 939.30 is: 1,296.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.48 : 2,223.67 = 939.30 : x
  2. Step 2: Convert to fraction form
    1,611.48/2,223.67 = 939.30/x
  3. Step 3: Cross multiply
    1,611.48x = 2,223.67 × 939.30
  4. Step 4: Simplify right side
    1,611.48x = 2,088,692.58
  5. Step 5: Solve for x
    x = 2,088,692.58/1,611.48
  6. Step 6: Final answer
    x = 1,296.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.