Home / 1,589.64-2,389.34-1,317.48

Finding the Fourth Proportional to 1,589.64, 2,389.34 and 1,317.48

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Solution

The fourth proportional to 1,589.64, 2,389.34 and 1,317.48 is: 1,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.64 : 2,389.34 = 1,317.48 : x
  2. Step 2: Convert to fraction form
    1,589.64/2,389.34 = 1,317.48/x
  3. Step 3: Cross multiply
    1,589.64x = 2,389.34 × 1,317.48
  4. Step 4: Simplify right side
    1,589.64x = 3,147,907.66
  5. Step 5: Solve for x
    x = 3,147,907.66/1,589.64
  6. Step 6: Final answer
    x = 1,980.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.