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Finding the Fourth Proportional to 8,643.95, 11,928.48 and 5,061.02

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Solution

The fourth proportional to 8,643.95, 11,928.48 and 5,061.02 is: 6,984.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.95 : 11,928.48 = 5,061.02 : x
  2. Step 2: Convert to fraction form
    8,643.95/11,928.48 = 5,061.02/x
  3. Step 3: Cross multiply
    8,643.95x = 11,928.48 × 5,061.02
  4. Step 4: Simplify right side
    8,643.95x = 60,370,275.85
  5. Step 5: Solve for x
    x = 60,370,275.85/8,643.95
  6. Step 6: Final answer
    x = 6,984.11

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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.