Home / 4,921.12-6,789.44-3,153.70

Finding the Fourth Proportional to 4,921.12, 6,789.44 and 3,153.70

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Solution

The fourth proportional to 4,921.12, 6,789.44 and 3,153.70 is: 4,351.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.12 : 6,789.44 = 3,153.70 : x
  2. Step 2: Convert to fraction form
    4,921.12/6,789.44 = 3,153.70/x
  3. Step 3: Cross multiply
    4,921.12x = 6,789.44 × 3,153.70
  4. Step 4: Simplify right side
    4,921.12x = 21,411,807.21
  5. Step 5: Solve for x
    x = 21,411,807.21/4,921.12
  6. Step 6: Final answer
    x = 4,351.01

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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.