Home / 2,605.04-3,900.60-1,629.20

Finding the Fourth Proportional to 2,605.04, 3,900.60 and 1,629.20

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Solution

The fourth proportional to 2,605.04, 3,900.60 and 1,629.20 is: 2,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.04 : 3,900.60 = 1,629.20 : x
  2. Step 2: Convert to fraction form
    2,605.04/3,900.60 = 1,629.20/x
  3. Step 3: Cross multiply
    2,605.04x = 3,900.60 × 1,629.20
  4. Step 4: Simplify right side
    2,605.04x = 6,354,857.52
  5. Step 5: Solve for x
    x = 6,354,857.52/2,605.04
  6. Step 6: Final answer
    x = 2,439.45

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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.