Home / 1,443.02-2,160.70-825.90

Finding the Fourth Proportional to 1,443.02, 2,160.70 and 825.90

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Solution

The fourth proportional to 1,443.02, 2,160.70 and 825.90 is: 1,236.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.02 : 2,160.70 = 825.90 : x
  2. Step 2: Convert to fraction form
    1,443.02/2,160.70 = 825.90/x
  3. Step 3: Cross multiply
    1,443.02x = 2,160.70 × 825.90
  4. Step 4: Simplify right side
    1,443.02x = 1,784,522.13
  5. Step 5: Solve for x
    x = 1,784,522.13/1,443.02
  6. Step 6: Final answer
    x = 1,236.66

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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.