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Finding the Fourth Proportional to 6,102.80, 9,154.20 and 3,140.63

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Solution

The fourth proportional to 6,102.80, 9,154.20 and 3,140.63 is: 4,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,102.80 : 9,154.20 = 3,140.63 : x
  2. Step 2: Convert to fraction form
    6,102.80/9,154.20 = 3,140.63/x
  3. Step 3: Cross multiply
    6,102.80x = 9,154.20 × 3,140.63
  4. Step 4: Simplify right side
    6,102.80x = 28,749,955.15
  5. Step 5: Solve for x
    x = 28,749,955.15/6,102.80
  6. Step 6: Final answer
    x = 4,710.95

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Double scale
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Similar ratio
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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.