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Finding the Fourth Proportional to 5,776.20, 7,971.08 and 3,123.59

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Solution

The fourth proportional to 5,776.20, 7,971.08 and 3,123.59 is: 4,310.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,776.20 : 7,971.08 = 3,123.59 : x
  2. Step 2: Convert to fraction form
    5,776.20/7,971.08 = 3,123.59/x
  3. Step 3: Cross multiply
    5,776.20x = 7,971.08 × 3,123.59
  4. Step 4: Simplify right side
    5,776.20x = 24,898,330.30
  5. Step 5: Solve for x
    x = 24,898,330.30/5,776.20
  6. Step 6: Final answer
    x = 4,310.50

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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.