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Finding the Fourth Proportional to 6,859.71, 10,281.12 and 3,900.63

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Solution

The fourth proportional to 6,859.71, 10,281.12 and 3,900.63 is: 5,846.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,859.71 : 10,281.12 = 3,900.63 : x
  2. Step 2: Convert to fraction form
    6,859.71/10,281.12 = 3,900.63/x
  3. Step 3: Cross multiply
    6,859.71x = 10,281.12 × 3,900.63
  4. Step 4: Simplify right side
    6,859.71x = 40,102,859.32
  5. Step 5: Solve for x
    x = 40,102,859.32/6,859.71
  6. Step 6: Final answer
    x = 5,846.15

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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.