Home / 1,318.24-1,821.44-1,271.52

Finding the Fourth Proportional to 1,318.24, 1,821.44 and 1,271.52

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Solution

The fourth proportional to 1,318.24, 1,821.44 and 1,271.52 is: 1,756.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.24 : 1,821.44 = 1,271.52 : x
  2. Step 2: Convert to fraction form
    1,318.24/1,821.44 = 1,271.52/x
  3. Step 3: Cross multiply
    1,318.24x = 1,821.44 × 1,271.52
  4. Step 4: Simplify right side
    1,318.24x = 2,315,997.39
  5. Step 5: Solve for x
    x = 2,315,997.39/1,318.24
  6. Step 6: Final answer
    x = 1,756.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.