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Finding the Fourth Proportional to 8,643.98, 11,934.54 and 6,528.06

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Solution

The fourth proportional to 8,643.98, 11,934.54 and 6,528.06 is: 9,013.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.98 : 11,934.54 = 6,528.06 : x
  2. Step 2: Convert to fraction form
    8,643.98/11,934.54 = 6,528.06/x
  3. Step 3: Cross multiply
    8,643.98x = 11,934.54 × 6,528.06
  4. Step 4: Simplify right side
    8,643.98x = 77,909,393.19
  5. Step 5: Solve for x
    x = 77,909,393.19/8,643.98
  6. Step 6: Final answer
    x = 9,013.14

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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.