Home / 3,439.07-5,157.64-1,330.21

Finding the Fourth Proportional to 3,439.07, 5,157.64 and 1,330.21

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Solution

The fourth proportional to 3,439.07, 5,157.64 and 1,330.21 is: 1,994.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.07 : 5,157.64 = 1,330.21 : x
  2. Step 2: Convert to fraction form
    3,439.07/5,157.64 = 1,330.21/x
  3. Step 3: Cross multiply
    3,439.07x = 5,157.64 × 1,330.21
  4. Step 4: Simplify right side
    3,439.07x = 6,860,744.30
  5. Step 5: Solve for x
    x = 6,860,744.30/3,439.07
  6. Step 6: Final answer
    x = 1,994.94

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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.