Home / 8,678.39-13,017.47-2,104.63

Finding the Fourth Proportional to 8,678.39, 13,017.47 and 2,104.63

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Solution

The fourth proportional to 8,678.39, 13,017.47 and 2,104.63 is: 3,156.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.39 : 13,017.47 = 2,104.63 : x
  2. Step 2: Convert to fraction form
    8,678.39/13,017.47 = 2,104.63/x
  3. Step 3: Cross multiply
    8,678.39x = 13,017.47 × 2,104.63
  4. Step 4: Simplify right side
    8,678.39x = 27,396,957.89
  5. Step 5: Solve for x
    x = 27,396,957.89/8,678.39
  6. Step 6: Final answer
    x = 3,156.92

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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.