Home / 8,690.52-13,035.79-2,116.70

Finding the Fourth Proportional to 8,690.52, 13,035.79 and 2,116.70

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Solution

The fourth proportional to 8,690.52, 13,035.79 and 2,116.70 is: 3,175.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.52 : 13,035.79 = 2,116.70 : x
  2. Step 2: Convert to fraction form
    8,690.52/13,035.79 = 2,116.70/x
  3. Step 3: Cross multiply
    8,690.52x = 13,035.79 × 2,116.70
  4. Step 4: Simplify right side
    8,690.52x = 27,592,856.69
  5. Step 5: Solve for x
    x = 27,592,856.69/8,690.52
  6. Step 6: Final answer
    x = 3,175.05

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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.