Home / 1,458.12-2,188.41-637.05

Finding the Fourth Proportional to 1,458.12, 2,188.41 and 637.05

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Solution

The fourth proportional to 1,458.12, 2,188.41 and 637.05 is: 956.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.12 : 2,188.41 = 637.05 : x
  2. Step 2: Convert to fraction form
    1,458.12/2,188.41 = 637.05/x
  3. Step 3: Cross multiply
    1,458.12x = 2,188.41 × 637.05
  4. Step 4: Simplify right side
    1,458.12x = 1,394,126.59
  5. Step 5: Solve for x
    x = 1,394,126.59/1,458.12
  6. Step 6: Final answer
    x = 956.11

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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.