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Finding the Fourth Proportional to 6,447.81, 8,894.81 and 4,060.65

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Solution

The fourth proportional to 6,447.81, 8,894.81 and 4,060.65 is: 5,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.81 : 8,894.81 = 4,060.65 : x
  2. Step 2: Convert to fraction form
    6,447.81/8,894.81 = 4,060.65/x
  3. Step 3: Cross multiply
    6,447.81x = 8,894.81 × 4,060.65
  4. Step 4: Simplify right side
    6,447.81x = 36,118,689.92
  5. Step 5: Solve for x
    x = 36,118,689.92/6,447.81
  6. Step 6: Final answer
    x = 5,601.70

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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.