Home / 2,589.61-3,570.57-2,115.76

Finding the Fourth Proportional to 2,589.61, 3,570.57 and 2,115.76

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Solution

The fourth proportional to 2,589.61, 3,570.57 and 2,115.76 is: 2,917.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.61 : 3,570.57 = 2,115.76 : x
  2. Step 2: Convert to fraction form
    2,589.61/3,570.57 = 2,115.76/x
  3. Step 3: Cross multiply
    2,589.61x = 3,570.57 × 2,115.76
  4. Step 4: Simplify right side
    2,589.61x = 7,554,469.18
  5. Step 5: Solve for x
    x = 7,554,469.18/2,589.61
  6. Step 6: Final answer
    x = 2,917.22

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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.