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Finding the Fourth Proportional to 4,690.71, 6,470.11 and 2,800.83

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Solution

The fourth proportional to 4,690.71, 6,470.11 and 2,800.83 is: 3,863.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,690.71 : 6,470.11 = 2,800.83 : x
  2. Step 2: Convert to fraction form
    4,690.71/6,470.11 = 2,800.83/x
  3. Step 3: Cross multiply
    4,690.71x = 6,470.11 × 2,800.83
  4. Step 4: Simplify right side
    4,690.71x = 18,121,669.56
  5. Step 5: Solve for x
    x = 18,121,669.56/4,690.71
  6. Step 6: Final answer
    x = 3,863.31

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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.