Home / 2,412.60-3,618.96-769.32

Finding the Fourth Proportional to 2,412.60, 3,618.96 and 769.32

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Solution

The fourth proportional to 2,412.60, 3,618.96 and 769.32 is: 1,154.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,412.60 : 3,618.96 = 769.32 : x
  2. Step 2: Convert to fraction form
    2,412.60/3,618.96 = 769.32/x
  3. Step 3: Cross multiply
    2,412.60x = 3,618.96 × 769.32
  4. Step 4: Simplify right side
    2,412.60x = 2,784,138.31
  5. Step 5: Solve for x
    x = 2,784,138.31/2,412.60
  6. Step 6: Final answer
    x = 1,154.00

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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.