Home / 1,431.50-2,148.42-610.39

Finding the Fourth Proportional to 1,431.50, 2,148.42 and 610.39

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Solution

The fourth proportional to 1,431.50, 2,148.42 and 610.39 is: 916.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.50 : 2,148.42 = 610.39 : x
  2. Step 2: Convert to fraction form
    1,431.50/2,148.42 = 610.39/x
  3. Step 3: Cross multiply
    1,431.50x = 2,148.42 × 610.39
  4. Step 4: Simplify right side
    1,431.50x = 1,311,366.97
  5. Step 5: Solve for x
    x = 1,311,366.97/1,431.50
  6. Step 6: Final answer
    x = 916.08

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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.