Home / 1,320.55-1,971.34-1,224.42

Finding the Fourth Proportional to 1,320.55, 1,971.34 and 1,224.42

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Solution

The fourth proportional to 1,320.55, 1,971.34 and 1,224.42 is: 1,827.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320.55 : 1,971.34 = 1,224.42 : x
  2. Step 2: Convert to fraction form
    1,320.55/1,971.34 = 1,224.42/x
  3. Step 3: Cross multiply
    1,320.55x = 1,971.34 × 1,224.42
  4. Step 4: Simplify right side
    1,320.55x = 2,413,737.67
  5. Step 5: Solve for x
    x = 2,413,737.67/1,320.55
  6. Step 6: Final answer
    x = 1,827.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.