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Finding the Fourth Proportional to 8,449.65, 12,637.58 and 6,899.63

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Solution

The fourth proportional to 8,449.65, 12,637.58 and 6,899.63 is: 10,319.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.65 : 12,637.58 = 6,899.63 : x
  2. Step 2: Convert to fraction form
    8,449.65/12,637.58 = 6,899.63/x
  3. Step 3: Cross multiply
    8,449.65x = 12,637.58 × 6,899.63
  4. Step 4: Simplify right side
    8,449.65x = 87,194,528.41
  5. Step 5: Solve for x
    x = 87,194,528.41/8,449.65
  6. Step 6: Final answer
    x = 10,319.31

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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.