Home / 1,360.16-2,039.76-629.60

Finding the Fourth Proportional to 1,360.16, 2,039.76 and 629.60

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Solution

The fourth proportional to 1,360.16, 2,039.76 and 629.60 is: 944.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.16 : 2,039.76 = 629.60 : x
  2. Step 2: Convert to fraction form
    1,360.16/2,039.76 = 629.60/x
  3. Step 3: Cross multiply
    1,360.16x = 2,039.76 × 629.60
  4. Step 4: Simplify right side
    1,360.16x = 1,284,232.90
  5. Step 5: Solve for x
    x = 1,284,232.90/1,360.16
  6. Step 6: Final answer
    x = 944.18

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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.