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Finding the Fourth Proportional to 5,631.03, 7,770.58 and 3,078.74

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Solution

The fourth proportional to 5,631.03, 7,770.58 and 3,078.74 is: 4,248.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.03 : 7,770.58 = 3,078.74 : x
  2. Step 2: Convert to fraction form
    5,631.03/7,770.58 = 3,078.74/x
  3. Step 3: Cross multiply
    5,631.03x = 7,770.58 × 3,078.74
  4. Step 4: Simplify right side
    5,631.03x = 23,923,585.34
  5. Step 5: Solve for x
    x = 23,923,585.34/5,631.03
  6. Step 6: Final answer
    x = 4,248.53

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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.