Home / 3,902.45-5,851.98-1,128.47

Finding the Fourth Proportional to 3,902.45, 5,851.98 and 1,128.47

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Solution

The fourth proportional to 3,902.45, 5,851.98 and 1,128.47 is: 1,692.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.45 : 5,851.98 = 1,128.47 : x
  2. Step 2: Convert to fraction form
    3,902.45/5,851.98 = 1,128.47/x
  3. Step 3: Cross multiply
    3,902.45x = 5,851.98 × 1,128.47
  4. Step 4: Simplify right side
    3,902.45x = 6,603,754.61
  5. Step 5: Solve for x
    x = 6,603,754.61/3,902.45
  6. Step 6: Final answer
    x = 1,692.21

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1.5x scale

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.