Home / 1,217.37-1,825.41-631.79

Finding the Fourth Proportional to 1,217.37, 1,825.41 and 631.79

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Solution

The fourth proportional to 1,217.37, 1,825.41 and 631.79 is: 947.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.37 : 1,825.41 = 631.79 : x
  2. Step 2: Convert to fraction form
    1,217.37/1,825.41 = 631.79/x
  3. Step 3: Cross multiply
    1,217.37x = 1,825.41 × 631.79
  4. Step 4: Simplify right side
    1,217.37x = 1,153,269.55
  5. Step 5: Solve for x
    x = 1,153,269.55/1,217.37
  6. Step 6: Final answer
    x = 947.34

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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.