Home / 8,184.88-11,278.36-7,743.72

Finding the Fourth Proportional to 8,184.88, 11,278.36 and 7,743.72

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Solution

The fourth proportional to 8,184.88, 11,278.36 and 7,743.72 is: 10,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,184.88 : 11,278.36 = 7,743.72 : x
  2. Step 2: Convert to fraction form
    8,184.88/11,278.36 = 7,743.72/x
  3. Step 3: Cross multiply
    8,184.88x = 11,278.36 × 7,743.72
  4. Step 4: Simplify right side
    8,184.88x = 87,336,461.90
  5. Step 5: Solve for x
    x = 87,336,461.90/8,184.88
  6. Step 6: Final answer
    x = 10,670.46

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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.