Home / 8,072.48-12,109.88-3,909.07

Finding the Fourth Proportional to 8,072.48, 12,109.88 and 3,909.07

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Solution

The fourth proportional to 8,072.48, 12,109.88 and 3,909.07 is: 5,864.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.48 : 12,109.88 = 3,909.07 : x
  2. Step 2: Convert to fraction form
    8,072.48/12,109.88 = 3,909.07/x
  3. Step 3: Cross multiply
    8,072.48x = 12,109.88 × 3,909.07
  4. Step 4: Simplify right side
    8,072.48x = 47,338,368.61
  5. Step 5: Solve for x
    x = 47,338,368.61/8,072.48
  6. Step 6: Final answer
    x = 5,864.17

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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.