Home / 5,405.45-7,455.58-4,132.20

Finding the Fourth Proportional to 5,405.45, 7,455.58 and 4,132.20

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Solution

The fourth proportional to 5,405.45, 7,455.58 and 4,132.20 is: 5,699.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.45 : 7,455.58 = 4,132.20 : x
  2. Step 2: Convert to fraction form
    5,405.45/7,455.58 = 4,132.20/x
  3. Step 3: Cross multiply
    5,405.45x = 7,455.58 × 4,132.20
  4. Step 4: Simplify right side
    5,405.45x = 30,807,965.30
  5. Step 5: Solve for x
    x = 30,807,965.30/5,405.45
  6. Step 6: Final answer
    x = 5,699.43

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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.