Home / 4,872.72-6,715.80-3,881.28

Finding the Fourth Proportional to 4,872.72, 6,715.80 and 3,881.28

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Solution

The fourth proportional to 4,872.72, 6,715.80 and 3,881.28 is: 5,349.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,872.72 : 6,715.80 = 3,881.28 : x
  2. Step 2: Convert to fraction form
    4,872.72/6,715.80 = 3,881.28/x
  3. Step 3: Cross multiply
    4,872.72x = 6,715.80 × 3,881.28
  4. Step 4: Simplify right side
    4,872.72x = 26,065,900.22
  5. Step 5: Solve for x
    x = 26,065,900.22/4,872.72
  6. Step 6: Final answer
    x = 5,349.35

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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.