Home / 4,921.63-6,788.01-3,153.40

Finding the Fourth Proportional to 4,921.63, 6,788.01 and 3,153.40

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Solution

The fourth proportional to 4,921.63, 6,788.01 and 3,153.40 is: 4,349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.63 : 6,788.01 = 3,153.40 : x
  2. Step 2: Convert to fraction form
    4,921.63/6,788.01 = 3,153.40/x
  3. Step 3: Cross multiply
    4,921.63x = 6,788.01 × 3,153.40
  4. Step 4: Simplify right side
    4,921.63x = 21,405,310.73
  5. Step 5: Solve for x
    x = 21,405,310.73/4,921.63
  6. Step 6: Final answer
    x = 4,349.23

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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.