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Finding the Fourth Proportional to 3,459.60, 4,773.84 and 1,947.12

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Solution

The fourth proportional to 3,459.60, 4,773.84 and 1,947.12 is: 2,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.60 : 4,773.84 = 1,947.12 : x
  2. Step 2: Convert to fraction form
    3,459.60/4,773.84 = 1,947.12/x
  3. Step 3: Cross multiply
    3,459.60x = 4,773.84 × 1,947.12
  4. Step 4: Simplify right side
    3,459.60x = 9,295,239.34
  5. Step 5: Solve for x
    x = 9,295,239.34/3,459.60
  6. Step 6: Final answer
    x = 2,686.80

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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.