Home / 3,157.79-4,355.78-1,830.40

Finding the Fourth Proportional to 3,157.79, 4,355.78 and 1,830.40

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Solution

The fourth proportional to 3,157.79, 4,355.78 and 1,830.40 is: 2,524.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.79 : 4,355.78 = 1,830.40 : x
  2. Step 2: Convert to fraction form
    3,157.79/4,355.78 = 1,830.40/x
  3. Step 3: Cross multiply
    3,157.79x = 4,355.78 × 1,830.40
  4. Step 4: Simplify right side
    3,157.79x = 7,972,799.67
  5. Step 5: Solve for x
    x = 7,972,799.67/3,157.79
  6. Step 6: Final answer
    x = 2,524.81

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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.