Home / 2,280.12-3,144.75-1,720.68

Finding the Fourth Proportional to 2,280.12, 3,144.75 and 1,720.68

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Solution

The fourth proportional to 2,280.12, 3,144.75 and 1,720.68 is: 2,373.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.12 : 3,144.75 = 1,720.68 : x
  2. Step 2: Convert to fraction form
    2,280.12/3,144.75 = 1,720.68/x
  3. Step 3: Cross multiply
    2,280.12x = 3,144.75 × 1,720.68
  4. Step 4: Simplify right side
    2,280.12x = 5,411,108.43
  5. Step 5: Solve for x
    x = 5,411,108.43/2,280.12
  6. Step 6: Final answer
    x = 2,373.17

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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.