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Finding the Fourth Proportional to 6,359.66, 9,539.50 and 1,977.12

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Solution

The fourth proportional to 6,359.66, 9,539.50 and 1,977.12 is: 2,965.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,359.66 : 9,539.50 = 1,977.12 : x
  2. Step 2: Convert to fraction form
    6,359.66/9,539.50 = 1,977.12/x
  3. Step 3: Cross multiply
    6,359.66x = 9,539.50 × 1,977.12
  4. Step 4: Simplify right side
    6,359.66x = 18,860,736.24
  5. Step 5: Solve for x
    x = 18,860,736.24/6,359.66
  6. Step 6: Final answer
    x = 2,965.68

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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.