Home / 3,480.17-5,222.58-1,288.91

Finding the Fourth Proportional to 3,480.17, 5,222.58 and 1,288.91

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Solution

The fourth proportional to 3,480.17, 5,222.58 and 1,288.91 is: 1,934.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.17 : 5,222.58 = 1,288.91 : x
  2. Step 2: Convert to fraction form
    3,480.17/5,222.58 = 1,288.91/x
  3. Step 3: Cross multiply
    3,480.17x = 5,222.58 × 1,288.91
  4. Step 4: Simplify right side
    3,480.17x = 6,731,443.81
  5. Step 5: Solve for x
    x = 6,731,443.81/3,480.17
  6. Step 6: Final answer
    x = 1,934.23

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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.