Home / 3,108.02-4,287.87-1,781.24

Finding the Fourth Proportional to 3,108.02, 4,287.87 and 1,781.24

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Solution

The fourth proportional to 3,108.02, 4,287.87 and 1,781.24 is: 2,457.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.02 : 4,287.87 = 1,781.24 : x
  2. Step 2: Convert to fraction form
    3,108.02/4,287.87 = 1,781.24/x
  3. Step 3: Cross multiply
    3,108.02x = 4,287.87 × 1,781.24
  4. Step 4: Simplify right side
    3,108.02x = 7,637,704.12
  5. Step 5: Solve for x
    x = 7,637,704.12/3,108.02
  6. Step 6: Final answer
    x = 2,457.42

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1.5x scale

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.