Home / 2,931.88-4,420-2,773.12

Finding the Fourth Proportional to 2,931.88, 4,420 and 2,773.12

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Solution

The fourth proportional to 2,931.88, 4,420 and 2,773.12 is: 4,180.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.88 : 4,420 = 2,773.12 : x
  2. Step 2: Convert to fraction form
    2,931.88/4,420 = 2,773.12/x
  3. Step 3: Cross multiply
    2,931.88x = 4,420 × 2,773.12
  4. Step 4: Simplify right side
    2,931.88x = 12,257,190.40
  5. Step 5: Solve for x
    x = 12,257,190.40/2,931.88
  6. Step 6: Final answer
    x = 4,180.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.