Home / 1,361.61-2,038.41-1,220.94

Finding the Fourth Proportional to 1,361.61, 2,038.41 and 1,220.94

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Solution

The fourth proportional to 1,361.61, 2,038.41 and 1,220.94 is: 1,827.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361.61 : 2,038.41 = 1,220.94 : x
  2. Step 2: Convert to fraction form
    1,361.61/2,038.41 = 1,220.94/x
  3. Step 3: Cross multiply
    1,361.61x = 2,038.41 × 1,220.94
  4. Step 4: Simplify right side
    1,361.61x = 2,488,776.31
  5. Step 5: Solve for x
    x = 2,488,776.31/1,361.61
  6. Step 6: Final answer
    x = 1,827.82

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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.