Home / 4,290.59-5,921.79-3,115.08

Finding the Fourth Proportional to 4,290.59, 5,921.79 and 3,115.08

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Solution

The fourth proportional to 4,290.59, 5,921.79 and 3,115.08 is: 4,299.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.59 : 5,921.79 = 3,115.08 : x
  2. Step 2: Convert to fraction form
    4,290.59/5,921.79 = 3,115.08/x
  3. Step 3: Cross multiply
    4,290.59x = 5,921.79 × 3,115.08
  4. Step 4: Simplify right side
    4,290.59x = 18,446,834.02
  5. Step 5: Solve for x
    x = 18,446,834.02/4,290.59
  6. Step 6: Final answer
    x = 4,299.37

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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.