Home / 2,840.10-4,261.21-1,279.63

Finding the Fourth Proportional to 2,840.10, 4,261.21 and 1,279.63

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Solution

The fourth proportional to 2,840.10, 4,261.21 and 1,279.63 is: 1,919.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.10 : 4,261.21 = 1,279.63 : x
  2. Step 2: Convert to fraction form
    2,840.10/4,261.21 = 1,279.63/x
  3. Step 3: Cross multiply
    2,840.10x = 4,261.21 × 1,279.63
  4. Step 4: Simplify right side
    2,840.10x = 5,452,774.28
  5. Step 5: Solve for x
    x = 5,452,774.28/2,840.10
  6. Step 6: Final answer
    x = 1,919.93

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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.