Home / 2,789.32-4,184.36-841.20

Finding the Fourth Proportional to 2,789.32, 4,184.36 and 841.20

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Solution

The fourth proportional to 2,789.32, 4,184.36 and 841.20 is: 1,261.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.32 : 4,184.36 = 841.20 : x
  2. Step 2: Convert to fraction form
    2,789.32/4,184.36 = 841.20/x
  3. Step 3: Cross multiply
    2,789.32x = 4,184.36 × 841.20
  4. Step 4: Simplify right side
    2,789.32x = 3,519,883.63
  5. Step 5: Solve for x
    x = 3,519,883.63/2,789.32
  6. Step 6: Final answer
    x = 1,261.91

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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.