Home / 8,634.21-13,005.56-7,859.13

Finding the Fourth Proportional to 8,634.21, 13,005.56 and 7,859.13

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Solution

The fourth proportional to 8,634.21, 13,005.56 and 7,859.13 is: 11,838.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.21 : 13,005.56 = 7,859.13 : x
  2. Step 2: Convert to fraction form
    8,634.21/13,005.56 = 7,859.13/x
  3. Step 3: Cross multiply
    8,634.21x = 13,005.56 × 7,859.13
  4. Step 4: Simplify right side
    8,634.21x = 102,212,347.47
  5. Step 5: Solve for x
    x = 102,212,347.47/8,634.21
  6. Step 6: Final answer
    x = 11,838.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.