Home / 5,112.21-7,705.94-4,690.91

Finding the Fourth Proportional to 5,112.21, 7,705.94 and 4,690.91

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Solution

The fourth proportional to 5,112.21, 7,705.94 and 4,690.91 is: 7,070.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.21 : 7,705.94 = 4,690.91 : x
  2. Step 2: Convert to fraction form
    5,112.21/7,705.94 = 4,690.91/x
  3. Step 3: Cross multiply
    5,112.21x = 7,705.94 × 4,690.91
  4. Step 4: Simplify right side
    5,112.21x = 36,147,866.82
  5. Step 5: Solve for x
    x = 36,147,866.82/5,112.21
  6. Step 6: Final answer
    x = 7,070.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.