Home / 3,431.65-4,737.76-2,220.90

Finding the Fourth Proportional to 3,431.65, 4,737.76 and 2,220.90

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Solution

The fourth proportional to 3,431.65, 4,737.76 and 2,220.90 is: 3,066.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.65 : 4,737.76 = 2,220.90 : x
  2. Step 2: Convert to fraction form
    3,431.65/4,737.76 = 2,220.90/x
  3. Step 3: Cross multiply
    3,431.65x = 4,737.76 × 2,220.90
  4. Step 4: Simplify right side
    3,431.65x = 10,522,091.18
  5. Step 5: Solve for x
    x = 10,522,091.18/3,431.65
  6. Step 6: Final answer
    x = 3,066.19

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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.