Home / 3,957.10-5,931.60-2,312.80

Finding the Fourth Proportional to 3,957.10, 5,931.60 and 2,312.80

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Solution

The fourth proportional to 3,957.10, 5,931.60 and 2,312.80 is: 3,466.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.10 : 5,931.60 = 2,312.80 : x
  2. Step 2: Convert to fraction form
    3,957.10/5,931.60 = 2,312.80/x
  3. Step 3: Cross multiply
    3,957.10x = 5,931.60 × 2,312.80
  4. Step 4: Simplify right side
    3,957.10x = 13,718,604.48
  5. Step 5: Solve for x
    x = 13,718,604.48/3,957.10
  6. Step 6: Final answer
    x = 3,466.83

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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.