Home / 3,058.60-4,591.42-1,905

Finding the Fourth Proportional to 3,058.60, 4,591.42 and 1,905

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Solution

The fourth proportional to 3,058.60, 4,591.42 and 1,905 is: 2,859.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,058.60 : 4,591.42 = 1,905 : x
  2. Step 2: Convert to fraction form
    3,058.60/4,591.42 = 1,905/x
  3. Step 3: Cross multiply
    3,058.60x = 4,591.42 × 1,905
  4. Step 4: Simplify right side
    3,058.60x = 8,746,655.10
  5. Step 5: Solve for x
    x = 8,746,655.10/3,058.60
  6. Step 6: Final answer
    x = 2,859.69

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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.