Home / 1,233.83-1,845.12-921.70

Finding the Fourth Proportional to 1,233.83, 1,845.12 and 921.70

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Solution

The fourth proportional to 1,233.83, 1,845.12 and 921.70 is: 1,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.83 : 1,845.12 = 921.70 : x
  2. Step 2: Convert to fraction form
    1,233.83/1,845.12 = 921.70/x
  3. Step 3: Cross multiply
    1,233.83x = 1,845.12 × 921.70
  4. Step 4: Simplify right side
    1,233.83x = 1,700,647.10
  5. Step 5: Solve for x
    x = 1,700,647.10/1,233.83
  6. Step 6: Final answer
    x = 1,378.35

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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.