Home / 4,679.78-6,458.37-2,690.90

Finding the Fourth Proportional to 4,679.78, 6,458.37 and 2,690.90

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Solution

The fourth proportional to 4,679.78, 6,458.37 and 2,690.90 is: 3,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.78 : 6,458.37 = 2,690.90 : x
  2. Step 2: Convert to fraction form
    4,679.78/6,458.37 = 2,690.90/x
  3. Step 3: Cross multiply
    4,679.78x = 6,458.37 × 2,690.90
  4. Step 4: Simplify right side
    4,679.78x = 17,378,827.83
  5. Step 5: Solve for x
    x = 17,378,827.83/4,679.78
  6. Step 6: Final answer
    x = 3,713.60

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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.