Home / 2,239.45-3,090.68-1,355.74

Finding the Fourth Proportional to 2,239.45, 3,090.68 and 1,355.74

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Solution

The fourth proportional to 2,239.45, 3,090.68 and 1,355.74 is: 1,871.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.45 : 3,090.68 = 1,355.74 : x
  2. Step 2: Convert to fraction form
    2,239.45/3,090.68 = 1,355.74/x
  3. Step 3: Cross multiply
    2,239.45x = 3,090.68 × 1,355.74
  4. Step 4: Simplify right side
    2,239.45x = 4,190,158.50
  5. Step 5: Solve for x
    x = 4,190,158.50/2,239.45
  6. Step 6: Final answer
    x = 1,871.07

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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.