Home / 2,512.48-3,765.47-1,280.20

Finding the Fourth Proportional to 2,512.48, 3,765.47 and 1,280.20

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Solution

The fourth proportional to 2,512.48, 3,765.47 and 1,280.20 is: 1,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.48 : 3,765.47 = 1,280.20 : x
  2. Step 2: Convert to fraction form
    2,512.48/3,765.47 = 1,280.20/x
  3. Step 3: Cross multiply
    2,512.48x = 3,765.47 × 1,280.20
  4. Step 4: Simplify right side
    2,512.48x = 4,820,554.69
  5. Step 5: Solve for x
    x = 4,820,554.69/2,512.48
  6. Step 6: Final answer
    x = 1,918.64

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1.5x scale

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.