Home / 8,275.16-11,436.10-6,780.72

Finding the Fourth Proportional to 8,275.16, 11,436.10 and 6,780.72

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Solution

The fourth proportional to 8,275.16, 11,436.10 and 6,780.72 is: 9,370.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,275.16 : 11,436.10 = 6,780.72 : x
  2. Step 2: Convert to fraction form
    8,275.16/11,436.10 = 6,780.72/x
  3. Step 3: Cross multiply
    8,275.16x = 11,436.10 × 6,780.72
  4. Step 4: Simplify right side
    8,275.16x = 77,544,991.99
  5. Step 5: Solve for x
    x = 77,544,991.99/8,275.16
  6. Step 6: Final answer
    x = 9,370.81

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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.