Home / 1,580.10-2,179.94-1,281.21

Finding the Fourth Proportional to 1,580.10, 2,179.94 and 1,281.21

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Solution

The fourth proportional to 1,580.10, 2,179.94 and 1,281.21 is: 1,767.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.10 : 2,179.94 = 1,281.21 : x
  2. Step 2: Convert to fraction form
    1,580.10/2,179.94 = 1,281.21/x
  3. Step 3: Cross multiply
    1,580.10x = 2,179.94 × 1,281.21
  4. Step 4: Simplify right side
    1,580.10x = 2,792,954.52
  5. Step 5: Solve for x
    x = 2,792,954.52/1,580.10
  6. Step 6: Final answer
    x = 1,767.58

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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.