Home / 5,609.04-7,740.56-3,219.20

Finding the Fourth Proportional to 5,609.04, 7,740.56 and 3,219.20

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Solution

The fourth proportional to 5,609.04, 7,740.56 and 3,219.20 is: 4,442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,609.04 : 7,740.56 = 3,219.20 : x
  2. Step 2: Convert to fraction form
    5,609.04/7,740.56 = 3,219.20/x
  3. Step 3: Cross multiply
    5,609.04x = 7,740.56 × 3,219.20
  4. Step 4: Simplify right side
    5,609.04x = 24,918,410.75
  5. Step 5: Solve for x
    x = 24,918,410.75/5,609.04
  6. Step 6: Final answer
    x = 4,442.54

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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.