Home / 2,420.02-3,628.56-1,185.90

Finding the Fourth Proportional to 2,420.02, 3,628.56 and 1,185.90

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Solution

The fourth proportional to 2,420.02, 3,628.56 and 1,185.90 is: 1,778.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.02 : 3,628.56 = 1,185.90 : x
  2. Step 2: Convert to fraction form
    2,420.02/3,628.56 = 1,185.90/x
  3. Step 3: Cross multiply
    2,420.02x = 3,628.56 × 1,185.90
  4. Step 4: Simplify right side
    2,420.02x = 4,303,109.30
  5. Step 5: Solve for x
    x = 4,303,109.30/2,420.02
  6. Step 6: Final answer
    x = 1,778.13

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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.