Home / 1,619.31-2,429.19-523.32

Finding the Fourth Proportional to 1,619.31, 2,429.19 and 523.32

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Solution

The fourth proportional to 1,619.31, 2,429.19 and 523.32 is: 785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.31 : 2,429.19 = 523.32 : x
  2. Step 2: Convert to fraction form
    1,619.31/2,429.19 = 523.32/x
  3. Step 3: Cross multiply
    1,619.31x = 2,429.19 × 523.32
  4. Step 4: Simplify right side
    1,619.31x = 1,271,243.71
  5. Step 5: Solve for x
    x = 1,271,243.71/1,619.31
  6. Step 6: Final answer
    x = 785.05

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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.