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Finding the Fourth Proportional to 8,521.88, 11,759.52 and 4,744.76

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Solution

The fourth proportional to 8,521.88, 11,759.52 and 4,744.76 is: 6,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.88 : 11,759.52 = 4,744.76 : x
  2. Step 2: Convert to fraction form
    8,521.88/11,759.52 = 4,744.76/x
  3. Step 3: Cross multiply
    8,521.88x = 11,759.52 × 4,744.76
  4. Step 4: Simplify right side
    8,521.88x = 55,796,100.12
  5. Step 5: Solve for x
    x = 55,796,100.12/8,521.88
  6. Step 6: Final answer
    x = 6,547.39

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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.