Home / 3,108.12-4,284.78-2,223.60

Finding the Fourth Proportional to 3,108.12, 4,284.78 and 2,223.60

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Solution

The fourth proportional to 3,108.12, 4,284.78 and 2,223.60 is: 3,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.12 : 4,284.78 = 2,223.60 : x
  2. Step 2: Convert to fraction form
    3,108.12/4,284.78 = 2,223.60/x
  3. Step 3: Cross multiply
    3,108.12x = 4,284.78 × 2,223.60
  4. Step 4: Simplify right side
    3,108.12x = 9,527,636.81
  5. Step 5: Solve for x
    x = 9,527,636.81/3,108.12
  6. Step 6: Final answer
    x = 3,065.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.