Home / 8,886.78-13,314.38-5,185.89

Finding the Fourth Proportional to 8,886.78, 13,314.38 and 5,185.89

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Solution

The fourth proportional to 8,886.78, 13,314.38 and 5,185.89 is: 7,769.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.78 : 13,314.38 = 5,185.89 : x
  2. Step 2: Convert to fraction form
    8,886.78/13,314.38 = 5,185.89/x
  3. Step 3: Cross multiply
    8,886.78x = 13,314.38 × 5,185.89
  4. Step 4: Simplify right side
    8,886.78x = 69,046,884.17
  5. Step 5: Solve for x
    x = 69,046,884.17/8,886.78
  6. Step 6: Final answer
    x = 7,769.62

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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.