Home / 8,261.28-12,330.72-7,683.36

Finding the Fourth Proportional to 8,261.28, 12,330.72 and 7,683.36

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Solution

The fourth proportional to 8,261.28, 12,330.72 and 7,683.36 is: 11,468.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.28 : 12,330.72 = 7,683.36 : x
  2. Step 2: Convert to fraction form
    8,261.28/12,330.72 = 7,683.36/x
  3. Step 3: Cross multiply
    8,261.28x = 12,330.72 × 7,683.36
  4. Step 4: Simplify right side
    8,261.28x = 94,741,360.82
  5. Step 5: Solve for x
    x = 94,741,360.82/8,261.28
  6. Step 6: Final answer
    x = 11,468.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.