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Finding the Fourth Proportional to 6,987.97, 10,481.98 and 6,637.59

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Solution

The fourth proportional to 6,987.97, 10,481.98 and 6,637.59 is: 9,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.97 : 10,481.98 = 6,637.59 : x
  2. Step 2: Convert to fraction form
    6,987.97/10,481.98 = 6,637.59/x
  3. Step 3: Cross multiply
    6,987.97x = 10,481.98 × 6,637.59
  4. Step 4: Simplify right side
    6,987.97x = 69,575,085.63
  5. Step 5: Solve for x
    x = 69,575,085.63/6,987.97
  6. Step 6: Final answer
    x = 9,956.41

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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.