Home / 3,156.60-4,355.79-1,830.72

Finding the Fourth Proportional to 3,156.60, 4,355.79 and 1,830.72

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Solution

The fourth proportional to 3,156.60, 4,355.79 and 1,830.72 is: 2,526.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.60 : 4,355.79 = 1,830.72 : x
  2. Step 2: Convert to fraction form
    3,156.60/4,355.79 = 1,830.72/x
  3. Step 3: Cross multiply
    3,156.60x = 4,355.79 × 1,830.72
  4. Step 4: Simplify right side
    3,156.60x = 7,974,231.87
  5. Step 5: Solve for x
    x = 7,974,231.87/3,156.60
  6. Step 6: Final answer
    x = 2,526.21

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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.