Home / 7,128.30-10,692.45-1,934.17

Finding the Fourth Proportional to 7,128.30, 10,692.45 and 1,934.17

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Solution

The fourth proportional to 7,128.30, 10,692.45 and 1,934.17 is: 2,901.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.30 : 10,692.45 = 1,934.17 : x
  2. Step 2: Convert to fraction form
    7,128.30/10,692.45 = 1,934.17/x
  3. Step 3: Cross multiply
    7,128.30x = 10,692.45 × 1,934.17
  4. Step 4: Simplify right side
    7,128.30x = 20,681,029.38
  5. Step 5: Solve for x
    x = 20,681,029.38/7,128.30
  6. Step 6: Final answer
    x = 2,901.26

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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.