Home / 8,305.12-11,434.80-6,738.40

Finding the Fourth Proportional to 8,305.12, 11,434.80 and 6,738.40

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Solution

The fourth proportional to 8,305.12, 11,434.80 and 6,738.40 is: 9,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305.12 : 11,434.80 = 6,738.40 : x
  2. Step 2: Convert to fraction form
    8,305.12/11,434.80 = 6,738.40/x
  3. Step 3: Cross multiply
    8,305.12x = 11,434.80 × 6,738.40
  4. Step 4: Simplify right side
    8,305.12x = 77,052,256.32
  5. Step 5: Solve for x
    x = 77,052,256.32/8,305.12
  6. Step 6: Final answer
    x = 9,277.68

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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.