Home / 1,424.16-2,135.20-602.80

Finding the Fourth Proportional to 1,424.16, 2,135.20 and 602.80

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Solution

The fourth proportional to 1,424.16, 2,135.20 and 602.80 is: 903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.16 : 2,135.20 = 602.80 : x
  2. Step 2: Convert to fraction form
    1,424.16/2,135.20 = 602.80/x
  3. Step 3: Cross multiply
    1,424.16x = 2,135.20 × 602.80
  4. Step 4: Simplify right side
    1,424.16x = 1,287,098.56
  5. Step 5: Solve for x
    x = 1,287,098.56/1,424.16
  6. Step 6: Final answer
    x = 903.76

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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.