Home / 2,931.40-4,397.10-2,662.60

Finding the Fourth Proportional to 2,931.40, 4,397.10 and 2,662.60

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Solution

The fourth proportional to 2,931.40, 4,397.10 and 2,662.60 is: 3,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.40 : 4,397.10 = 2,662.60 : x
  2. Step 2: Convert to fraction form
    2,931.40/4,397.10 = 2,662.60/x
  3. Step 3: Cross multiply
    2,931.40x = 4,397.10 × 2,662.60
  4. Step 4: Simplify right side
    2,931.40x = 11,707,718.46
  5. Step 5: Solve for x
    x = 11,707,718.46/2,931.40
  6. Step 6: Final answer
    x = 3,993.90

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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.