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Finding the Fourth Proportional to 6,390.47, 8,818.92 and 3,595.97

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Solution

The fourth proportional to 6,390.47, 8,818.92 and 3,595.97 is: 4,962.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.47 : 8,818.92 = 3,595.97 : x
  2. Step 2: Convert to fraction form
    6,390.47/8,818.92 = 3,595.97/x
  3. Step 3: Cross multiply
    6,390.47x = 8,818.92 × 3,595.97
  4. Step 4: Simplify right side
    6,390.47x = 31,712,571.75
  5. Step 5: Solve for x
    x = 31,712,571.75/6,390.47
  6. Step 6: Final answer
    x = 4,962.48

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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.