Home / 3,156.61-4,355.16-1,830.05

Finding the Fourth Proportional to 3,156.61, 4,355.16 and 1,830.05

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Solution

The fourth proportional to 3,156.61, 4,355.16 and 1,830.05 is: 2,524.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.61 : 4,355.16 = 1,830.05 : x
  2. Step 2: Convert to fraction form
    3,156.61/4,355.16 = 1,830.05/x
  3. Step 3: Cross multiply
    3,156.61x = 4,355.16 × 1,830.05
  4. Step 4: Simplify right side
    3,156.61x = 7,970,155.07
  5. Step 5: Solve for x
    x = 7,970,155.07/3,156.61
  6. Step 6: Final answer
    x = 2,524.91

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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.