Home / 1,424.03-2,136.45-903.20

Finding the Fourth Proportional to 1,424.03, 2,136.45 and 903.20

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Solution

The fourth proportional to 1,424.03, 2,136.45 and 903.20 is: 1,355.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.03 : 2,136.45 = 903.20 : x
  2. Step 2: Convert to fraction form
    1,424.03/2,136.45 = 903.20/x
  3. Step 3: Cross multiply
    1,424.03x = 2,136.45 × 903.20
  4. Step 4: Simplify right side
    1,424.03x = 1,929,641.64
  5. Step 5: Solve for x
    x = 1,929,641.64/1,424.03
  6. Step 6: Final answer
    x = 1,355.06

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1.5x scale

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.