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Finding the Fourth Proportional to 5,778.32, 7,974.08 and 3,125.72

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Solution

The fourth proportional to 5,778.32, 7,974.08 and 3,125.72 is: 4,313.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.32 : 7,974.08 = 3,125.72 : x
  2. Step 2: Convert to fraction form
    5,778.32/7,974.08 = 3,125.72/x
  3. Step 3: Cross multiply
    5,778.32x = 7,974.08 × 3,125.72
  4. Step 4: Simplify right side
    5,778.32x = 24,924,741.34
  5. Step 5: Solve for x
    x = 24,924,741.34/5,778.32
  6. Step 6: Final answer
    x = 4,313.49

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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.