Home / 5,123.31-7,685.11-2,784.44

Finding the Fourth Proportional to 5,123.31, 7,685.11 and 2,784.44

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Solution

The fourth proportional to 5,123.31, 7,685.11 and 2,784.44 is: 4,176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.31 : 7,685.11 = 2,784.44 : x
  2. Step 2: Convert to fraction form
    5,123.31/7,685.11 = 2,784.44/x
  3. Step 3: Cross multiply
    5,123.31x = 7,685.11 × 2,784.44
  4. Step 4: Simplify right side
    5,123.31x = 21,398,727.69
  5. Step 5: Solve for x
    x = 21,398,727.69/5,123.31
  6. Step 6: Final answer
    x = 4,176.74

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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.