Home / 8,620.21-12,934.26-5,117.16

Finding the Fourth Proportional to 8,620.21, 12,934.26 and 5,117.16

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Solution

The fourth proportional to 8,620.21, 12,934.26 and 5,117.16 is: 7,678.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.21 : 12,934.26 = 5,117.16 : x
  2. Step 2: Convert to fraction form
    8,620.21/12,934.26 = 5,117.16/x
  3. Step 3: Cross multiply
    8,620.21x = 12,934.26 × 5,117.16
  4. Step 4: Simplify right side
    8,620.21x = 66,186,677.90
  5. Step 5: Solve for x
    x = 66,186,677.90/8,620.21
  6. Step 6: Final answer
    x = 7,678.08

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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.