Home / 1,292.28-1,938.83-1,214.93

Finding the Fourth Proportional to 1,292.28, 1,938.83 and 1,214.93

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Solution

The fourth proportional to 1,292.28, 1,938.83 and 1,214.93 is: 1,822.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.28 : 1,938.83 = 1,214.93 : x
  2. Step 2: Convert to fraction form
    1,292.28/1,938.83 = 1,214.93/x
  3. Step 3: Cross multiply
    1,292.28x = 1,938.83 × 1,214.93
  4. Step 4: Simplify right side
    1,292.28x = 2,355,526.96
  5. Step 5: Solve for x
    x = 2,355,526.96/1,292.28
  6. Step 6: Final answer
    x = 1,822.77

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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.