Home / 1,220.79-1,827.98-1,025.31

Finding the Fourth Proportional to 1,220.79, 1,827.98 and 1,025.31

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Solution

The fourth proportional to 1,220.79, 1,827.98 and 1,025.31 is: 1,535.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.79 : 1,827.98 = 1,025.31 : x
  2. Step 2: Convert to fraction form
    1,220.79/1,827.98 = 1,025.31/x
  3. Step 3: Cross multiply
    1,220.79x = 1,827.98 × 1,025.31
  4. Step 4: Simplify right side
    1,220.79x = 1,874,241.05
  5. Step 5: Solve for x
    x = 1,874,241.05/1,220.79
  6. Step 6: Final answer
    x = 1,535.27

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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.