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Finding the Fourth Proportional to 3,409.60, 5,114.40 and 944.80

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Solution

The fourth proportional to 3,409.60, 5,114.40 and 944.80 is: 1,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.60 : 5,114.40 = 944.80 : x
  2. Step 2: Convert to fraction form
    3,409.60/5,114.40 = 944.80/x
  3. Step 3: Cross multiply
    3,409.60x = 5,114.40 × 944.80
  4. Step 4: Simplify right side
    3,409.60x = 4,832,085.12
  5. Step 5: Solve for x
    x = 4,832,085.12/3,409.60
  6. Step 6: Final answer
    x = 1,417.20

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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.