Home / 8,712.48-13,068.95-2,138.65

Finding the Fourth Proportional to 8,712.48, 13,068.95 and 2,138.65

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Solution

The fourth proportional to 8,712.48, 13,068.95 and 2,138.65 is: 3,208.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.48 : 13,068.95 = 2,138.65 : x
  2. Step 2: Convert to fraction form
    8,712.48/13,068.95 = 2,138.65/x
  3. Step 3: Cross multiply
    8,712.48x = 13,068.95 × 2,138.65
  4. Step 4: Simplify right side
    8,712.48x = 27,949,909.92
  5. Step 5: Solve for x
    x = 27,949,909.92/8,712.48
  6. Step 6: Final answer
    x = 3,208.03

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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.