Home / 6,490.29-8,958.56-5,615.49

Finding the Fourth Proportional to 6,490.29, 8,958.56 and 5,615.49

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Solution

The fourth proportional to 6,490.29, 8,958.56 and 5,615.49 is: 7,751.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490.29 : 8,958.56 = 5,615.49 : x
  2. Step 2: Convert to fraction form
    6,490.29/8,958.56 = 5,615.49/x
  3. Step 3: Cross multiply
    6,490.29x = 8,958.56 × 5,615.49
  4. Step 4: Simplify right side
    6,490.29x = 50,306,704.09
  5. Step 5: Solve for x
    x = 50,306,704.09/6,490.29
  6. Step 6: Final answer
    x = 7,751.07

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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.