Home / 1,261.10-1,892.19-438.93

Finding the Fourth Proportional to 1,261.10, 1,892.19 and 438.93

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Solution

The fourth proportional to 1,261.10, 1,892.19 and 438.93 is: 658.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.10 : 1,892.19 = 438.93 : x
  2. Step 2: Convert to fraction form
    1,261.10/1,892.19 = 438.93/x
  3. Step 3: Cross multiply
    1,261.10x = 1,892.19 × 438.93
  4. Step 4: Simplify right side
    1,261.10x = 830,529.50
  5. Step 5: Solve for x
    x = 830,529.50/1,261.10
  6. Step 6: Final answer
    x = 658.58

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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.