Home / 1,424.56-2,122.40-1,418.80

Finding the Fourth Proportional to 1,424.56, 2,122.40 and 1,418.80

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Solution

The fourth proportional to 1,424.56, 2,122.40 and 1,418.80 is: 2,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.56 : 2,122.40 = 1,418.80 : x
  2. Step 2: Convert to fraction form
    1,424.56/2,122.40 = 1,418.80/x
  3. Step 3: Cross multiply
    1,424.56x = 2,122.40 × 1,418.80
  4. Step 4: Simplify right side
    1,424.56x = 3,011,261.12
  5. Step 5: Solve for x
    x = 3,011,261.12/1,424.56
  6. Step 6: Final answer
    x = 2,113.82

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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.