Home / 3,319.94-4,980.51-1,128.47

Finding the Fourth Proportional to 3,319.94, 4,980.51 and 1,128.47

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Solution

The fourth proportional to 3,319.94, 4,980.51 and 1,128.47 is: 1,692.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.94 : 4,980.51 = 1,128.47 : x
  2. Step 2: Convert to fraction form
    3,319.94/4,980.51 = 1,128.47/x
  3. Step 3: Cross multiply
    3,319.94x = 4,980.51 × 1,128.47
  4. Step 4: Simplify right side
    3,319.94x = 5,620,356.12
  5. Step 5: Solve for x
    x = 5,620,356.12/3,319.94
  6. Step 6: Final answer
    x = 1,692.91

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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.