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Finding the Fourth Proportional to 7,863.13, 11,783.94 and 4,347.91

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Solution

The fourth proportional to 7,863.13, 11,783.94 and 4,347.91 is: 6,515.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.13 : 11,783.94 = 4,347.91 : x
  2. Step 2: Convert to fraction form
    7,863.13/11,783.94 = 4,347.91/x
  3. Step 3: Cross multiply
    7,863.13x = 11,783.94 × 4,347.91
  4. Step 4: Simplify right side
    7,863.13x = 51,235,510.57
  5. Step 5: Solve for x
    x = 51,235,510.57/7,863.13
  6. Step 6: Final answer
    x = 6,515.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.