Home / 8,726.68-13,148.26-7,894.72

Finding the Fourth Proportional to 8,726.68, 13,148.26 and 7,894.72

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Solution

The fourth proportional to 8,726.68, 13,148.26 and 7,894.72 is: 11,894.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.68 : 13,148.26 = 7,894.72 : x
  2. Step 2: Convert to fraction form
    8,726.68/13,148.26 = 7,894.72/x
  3. Step 3: Cross multiply
    8,726.68x = 13,148.26 × 7,894.72
  4. Step 4: Simplify right side
    8,726.68x = 103,801,831.19
  5. Step 5: Solve for x
    x = 103,801,831.19/8,726.68
  6. Step 6: Final answer
    x = 11,894.77

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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.