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Finding the Fourth Proportional to 5,144.68, 7,712.39 and 1,857.00

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Solution

The fourth proportional to 5,144.68, 7,712.39 and 1,857.00 is: 2,783.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,144.68 : 7,712.39 = 1,857.00 : x
  2. Step 2: Convert to fraction form
    5,144.68/7,712.39 = 1,857.00/x
  3. Step 3: Cross multiply
    5,144.68x = 7,712.39 × 1,857.00
  4. Step 4: Simplify right side
    5,144.68x = 14,321,869.67
  5. Step 5: Solve for x
    x = 14,321,869.67/5,144.68
  6. Step 6: Final answer
    x = 2,783.82

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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.