Home / 3,320.02-4,979.04-1,128.25

Finding the Fourth Proportional to 3,320.02, 4,979.04 and 1,128.25

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Solution

The fourth proportional to 3,320.02, 4,979.04 and 1,128.25 is: 1,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.02 : 4,979.04 = 1,128.25 : x
  2. Step 2: Convert to fraction form
    3,320.02/4,979.04 = 1,128.25/x
  3. Step 3: Cross multiply
    3,320.02x = 4,979.04 × 1,128.25
  4. Step 4: Simplify right side
    3,320.02x = 5,617,601.88
  5. Step 5: Solve for x
    x = 5,617,601.88/3,320.02
  6. Step 6: Final answer
    x = 1,692.04

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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.