Home / 8,645.13-11,929.48-5,107.66

Finding the Fourth Proportional to 8,645.13, 11,929.48 and 5,107.66

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Solution

The fourth proportional to 8,645.13, 11,929.48 and 5,107.66 is: 7,048.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.13 : 11,929.48 = 5,107.66 : x
  2. Step 2: Convert to fraction form
    8,645.13/11,929.48 = 5,107.66/x
  3. Step 3: Cross multiply
    8,645.13x = 11,929.48 × 5,107.66
  4. Step 4: Simplify right side
    8,645.13x = 60,931,685.22
  5. Step 5: Solve for x
    x = 60,931,685.22/8,645.13
  6. Step 6: Final answer
    x = 7,048.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.