Home / 1,431.06-2,146.05-609.72

Finding the Fourth Proportional to 1,431.06, 2,146.05 and 609.72

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Solution

The fourth proportional to 1,431.06, 2,146.05 and 609.72 is: 914.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.06 : 2,146.05 = 609.72 : x
  2. Step 2: Convert to fraction form
    1,431.06/2,146.05 = 609.72/x
  3. Step 3: Cross multiply
    1,431.06x = 2,146.05 × 609.72
  4. Step 4: Simplify right side
    1,431.06x = 1,308,489.61
  5. Step 5: Solve for x
    x = 1,308,489.61/1,431.06
  6. Step 6: Final answer
    x = 914.35

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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.