Home / 4,911.89-6,778.47-2,816

Finding the Fourth Proportional to 4,911.89, 6,778.47 and 2,816

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Solution

The fourth proportional to 4,911.89, 6,778.47 and 2,816 is: 3,886.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.89 : 6,778.47 = 2,816 : x
  2. Step 2: Convert to fraction form
    4,911.89/6,778.47 = 2,816/x
  3. Step 3: Cross multiply
    4,911.89x = 6,778.47 × 2,816
  4. Step 4: Simplify right side
    4,911.89x = 19,088,171.52
  5. Step 5: Solve for x
    x = 19,088,171.52/4,911.89
  6. Step 6: Final answer
    x = 3,886.12

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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.