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Finding the Fourth Proportional to 6,520.71, 9,777.42 and 2,820.63

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Solution

The fourth proportional to 6,520.71, 9,777.42 and 2,820.63 is: 4,229.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.71 : 9,777.42 = 2,820.63 : x
  2. Step 2: Convert to fraction form
    6,520.71/9,777.42 = 2,820.63/x
  3. Step 3: Cross multiply
    6,520.71x = 9,777.42 × 2,820.63
  4. Step 4: Simplify right side
    6,520.71x = 27,578,484.17
  5. Step 5: Solve for x
    x = 27,578,484.17/6,520.71
  6. Step 6: Final answer
    x = 4,229.37

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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.