Home / 7,128.32-10,692.47-1,934.19

Finding the Fourth Proportional to 7,128.32, 10,692.47 and 1,934.19

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Solution

The fourth proportional to 7,128.32, 10,692.47 and 1,934.19 is: 2,901.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.32 : 10,692.47 = 1,934.19 : x
  2. Step 2: Convert to fraction form
    7,128.32/10,692.47 = 1,934.19/x
  3. Step 3: Cross multiply
    7,128.32x = 10,692.47 × 1,934.19
  4. Step 4: Simplify right side
    7,128.32x = 20,681,273.38
  5. Step 5: Solve for x
    x = 20,681,273.38/7,128.32
  6. Step 6: Final answer
    x = 2,901.29

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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.