Home / 2,270.28-3,398.63-1,390.01

Finding the Fourth Proportional to 2,270.28, 3,398.63 and 1,390.01

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Solution

The fourth proportional to 2,270.28, 3,398.63 and 1,390.01 is: 2,080.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.28 : 3,398.63 = 1,390.01 : x
  2. Step 2: Convert to fraction form
    2,270.28/3,398.63 = 1,390.01/x
  3. Step 3: Cross multiply
    2,270.28x = 3,398.63 × 1,390.01
  4. Step 4: Simplify right side
    2,270.28x = 4,724,136.59
  5. Step 5: Solve for x
    x = 4,724,136.59/2,270.28
  6. Step 6: Final answer
    x = 2,080.86

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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.