Home / 2,076.04-2,864.80-1,279.20

Finding the Fourth Proportional to 2,076.04, 2,864.80 and 1,279.20

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Solution

The fourth proportional to 2,076.04, 2,864.80 and 1,279.20 is: 1,765.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.04 : 2,864.80 = 1,279.20 : x
  2. Step 2: Convert to fraction form
    2,076.04/2,864.80 = 1,279.20/x
  3. Step 3: Cross multiply
    2,076.04x = 2,864.80 × 1,279.20
  4. Step 4: Simplify right side
    2,076.04x = 3,664,652.16
  5. Step 5: Solve for x
    x = 3,664,652.16/2,076.04
  6. Step 6: Final answer
    x = 1,765.21

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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.