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Finding the Fourth Proportional to 6,398.61, 8,835.52 and 4,012.58

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Solution

The fourth proportional to 6,398.61, 8,835.52 and 4,012.58 is: 5,540.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398.61 : 8,835.52 = 4,012.58 : x
  2. Step 2: Convert to fraction form
    6,398.61/8,835.52 = 4,012.58/x
  3. Step 3: Cross multiply
    6,398.61x = 8,835.52 × 4,012.58
  4. Step 4: Simplify right side
    6,398.61x = 35,453,212.01
  5. Step 5: Solve for x
    x = 35,453,212.01/6,398.61
  6. Step 6: Final answer
    x = 5,540.77

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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.