Home / 3,480.06-5,217.12-1,288.38

Finding the Fourth Proportional to 3,480.06, 5,217.12 and 1,288.38

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Solution

The fourth proportional to 3,480.06, 5,217.12 and 1,288.38 is: 1,931.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.06 : 5,217.12 = 1,288.38 : x
  2. Step 2: Convert to fraction form
    3,480.06/5,217.12 = 1,288.38/x
  3. Step 3: Cross multiply
    3,480.06x = 5,217.12 × 1,288.38
  4. Step 4: Simplify right side
    3,480.06x = 6,721,633.07
  5. Step 5: Solve for x
    x = 6,721,633.07/3,480.06
  6. Step 6: Final answer
    x = 1,931.47

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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.