Home / 3,143.12-4,715.47-2,220.48

Finding the Fourth Proportional to 3,143.12, 4,715.47 and 2,220.48

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Solution

The fourth proportional to 3,143.12, 4,715.47 and 2,220.48 is: 3,331.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.12 : 4,715.47 = 2,220.48 : x
  2. Step 2: Convert to fraction form
    3,143.12/4,715.47 = 2,220.48/x
  3. Step 3: Cross multiply
    3,143.12x = 4,715.47 × 2,220.48
  4. Step 4: Simplify right side
    3,143.12x = 10,470,597.11
  5. Step 5: Solve for x
    x = 10,470,597.11/3,143.12
  6. Step 6: Final answer
    x = 3,331.27

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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.