Home / 2,589.36-3,570.23-2,115.51

Finding the Fourth Proportional to 2,589.36, 3,570.23 and 2,115.51

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Solution

The fourth proportional to 2,589.36, 3,570.23 and 2,115.51 is: 2,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.36 : 3,570.23 = 2,115.51 : x
  2. Step 2: Convert to fraction form
    2,589.36/3,570.23 = 2,115.51/x
  3. Step 3: Cross multiply
    2,589.36x = 3,570.23 × 2,115.51
  4. Step 4: Simplify right side
    2,589.36x = 7,552,846.69
  5. Step 5: Solve for x
    x = 7,552,846.69/2,589.36
  6. Step 6: Final answer
    x = 2,916.88

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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.