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Finding the Fourth Proportional to 8,689.83, 13,035.68 and 2,845.07

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Solution

The fourth proportional to 8,689.83, 13,035.68 and 2,845.07 is: 4,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.83 : 13,035.68 = 2,845.07 : x
  2. Step 2: Convert to fraction form
    8,689.83/13,035.68 = 2,845.07/x
  3. Step 3: Cross multiply
    8,689.83x = 13,035.68 × 2,845.07
  4. Step 4: Simplify right side
    8,689.83x = 37,087,422.10
  5. Step 5: Solve for x
    x = 37,087,422.10/8,689.83
  6. Step 6: Final answer
    x = 4,267.91

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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.