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Finding the Fourth Proportional to 8,398.72, 12,599.44 and 2,851.48

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Solution

The fourth proportional to 8,398.72, 12,599.44 and 2,851.48 is: 4,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.72 : 12,599.44 = 2,851.48 : x
  2. Step 2: Convert to fraction form
    8,398.72/12,599.44 = 2,851.48/x
  3. Step 3: Cross multiply
    8,398.72x = 12,599.44 × 2,851.48
  4. Step 4: Simplify right side
    8,398.72x = 35,927,051.17
  5. Step 5: Solve for x
    x = 35,927,051.17/8,398.72
  6. Step 6: Final answer
    x = 4,277.68

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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.