Home / 2,931.08-4,396.62-1,391.72

Finding the Fourth Proportional to 2,931.08, 4,396.62 and 1,391.72

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Solution

The fourth proportional to 2,931.08, 4,396.62 and 1,391.72 is: 2,087.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.08 : 4,396.62 = 1,391.72 : x
  2. Step 2: Convert to fraction form
    2,931.08/4,396.62 = 1,391.72/x
  3. Step 3: Cross multiply
    2,931.08x = 4,396.62 × 1,391.72
  4. Step 4: Simplify right side
    2,931.08x = 6,118,863.99
  5. Step 5: Solve for x
    x = 6,118,863.99/2,931.08
  6. Step 6: Final answer
    x = 2,087.58

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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.