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Finding the Fourth Proportional to 4,869.79, 6,720.38 and 2,773.87

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Solution

The fourth proportional to 4,869.79, 6,720.38 and 2,773.87 is: 3,827.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.79 : 6,720.38 = 2,773.87 : x
  2. Step 2: Convert to fraction form
    4,869.79/6,720.38 = 2,773.87/x
  3. Step 3: Cross multiply
    4,869.79x = 6,720.38 × 2,773.87
  4. Step 4: Simplify right side
    4,869.79x = 18,641,440.20
  5. Step 5: Solve for x
    x = 18,641,440.20/4,869.79
  6. Step 6: Final answer
    x = 3,827.98

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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.