Home / 8,610.29-11,886.14-6,620.15

Finding the Fourth Proportional to 8,610.29, 11,886.14 and 6,620.15

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Solution

The fourth proportional to 8,610.29, 11,886.14 and 6,620.15 is: 9,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.29 : 11,886.14 = 6,620.15 : x
  2. Step 2: Convert to fraction form
    8,610.29/11,886.14 = 6,620.15/x
  3. Step 3: Cross multiply
    8,610.29x = 11,886.14 × 6,620.15
  4. Step 4: Simplify right side
    8,610.29x = 78,688,029.72
  5. Step 5: Solve for x
    x = 78,688,029.72/8,610.29
  6. Step 6: Final answer
    x = 9,138.84

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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.