Home / 4,812.78-7,218.36-1,891.11

Finding the Fourth Proportional to 4,812.78, 7,218.36 and 1,891.11

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Solution

The fourth proportional to 4,812.78, 7,218.36 and 1,891.11 is: 2,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.78 : 7,218.36 = 1,891.11 : x
  2. Step 2: Convert to fraction form
    4,812.78/7,218.36 = 1,891.11/x
  3. Step 3: Cross multiply
    4,812.78x = 7,218.36 × 1,891.11
  4. Step 4: Simplify right side
    4,812.78x = 13,650,712.78
  5. Step 5: Solve for x
    x = 13,650,712.78/4,812.78
  6. Step 6: Final answer
    x = 2,836.35

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Double scale
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1.5x scale

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.