Home / 8,772.09-12,101.26-6,378.35

Finding the Fourth Proportional to 8,772.09, 12,101.26 and 6,378.35

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Solution

The fourth proportional to 8,772.09, 12,101.26 and 6,378.35 is: 8,799.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.09 : 12,101.26 = 6,378.35 : x
  2. Step 2: Convert to fraction form
    8,772.09/12,101.26 = 6,378.35/x
  3. Step 3: Cross multiply
    8,772.09x = 12,101.26 × 6,378.35
  4. Step 4: Simplify right side
    8,772.09x = 77,186,039.83
  5. Step 5: Solve for x
    x = 77,186,039.83/8,772.09
  6. Step 6: Final answer
    x = 8,799.05

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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.