Home / 1,580.98-2,181.91-1,181.95

Finding the Fourth Proportional to 1,580.98, 2,181.91 and 1,181.95

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Solution

The fourth proportional to 1,580.98, 2,181.91 and 1,181.95 is: 1,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.98 : 2,181.91 = 1,181.95 : x
  2. Step 2: Convert to fraction form
    1,580.98/2,181.91 = 1,181.95/x
  3. Step 3: Cross multiply
    1,580.98x = 2,181.91 × 1,181.95
  4. Step 4: Simplify right side
    1,580.98x = 2,578,908.52
  5. Step 5: Solve for x
    x = 2,578,908.52/1,580.98
  6. Step 6: Final answer
    x = 1,631.21

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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.