Home / 3,319.87-4,980.26-1,128.01

Finding the Fourth Proportional to 3,319.87, 4,980.26 and 1,128.01

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Solution

The fourth proportional to 3,319.87, 4,980.26 and 1,128.01 is: 1,692.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.87 : 4,980.26 = 1,128.01 : x
  2. Step 2: Convert to fraction form
    3,319.87/4,980.26 = 1,128.01/x
  3. Step 3: Cross multiply
    3,319.87x = 4,980.26 × 1,128.01
  4. Step 4: Simplify right side
    3,319.87x = 5,617,783.08
  5. Step 5: Solve for x
    x = 5,617,783.08/3,319.87
  6. Step 6: Final answer
    x = 1,692.17

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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.