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Finding the Fourth Proportional to 5,065.98, 6,990.90 and 2,827.80

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Solution

The fourth proportional to 5,065.98, 6,990.90 and 2,827.80 is: 3,902.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,065.98 : 6,990.90 = 2,827.80 : x
  2. Step 2: Convert to fraction form
    5,065.98/6,990.90 = 2,827.80/x
  3. Step 3: Cross multiply
    5,065.98x = 6,990.90 × 2,827.80
  4. Step 4: Simplify right side
    5,065.98x = 19,768,867.02
  5. Step 5: Solve for x
    x = 19,768,867.02/5,065.98
  6. Step 6: Final answer
    x = 3,902.28

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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.