Home / 9,889.41-13,647.96-5,641.77

Finding the Fourth Proportional to 9,889.41, 13,647.96 and 5,641.77

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Solution

The fourth proportional to 9,889.41, 13,647.96 and 5,641.77 is: 7,785.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,889.41 : 13,647.96 = 5,641.77 : x
  2. Step 2: Convert to fraction form
    9,889.41/13,647.96 = 5,641.77/x
  3. Step 3: Cross multiply
    9,889.41x = 13,647.96 × 5,641.77
  4. Step 4: Simplify right side
    9,889.41x = 76,998,651.29
  5. Step 5: Solve for x
    x = 76,998,651.29/9,889.41
  6. Step 6: Final answer
    x = 7,785.97

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1.5x scale

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.