Home / 1,619.39-2,235.09-1,029.81

Finding the Fourth Proportional to 1,619.39, 2,235.09 and 1,029.81

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Solution

The fourth proportional to 1,619.39, 2,235.09 and 1,029.81 is: 1,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.39 : 2,235.09 = 1,029.81 : x
  2. Step 2: Convert to fraction form
    1,619.39/2,235.09 = 1,029.81/x
  3. Step 3: Cross multiply
    1,619.39x = 2,235.09 × 1,029.81
  4. Step 4: Simplify right side
    1,619.39x = 2,301,730.28
  5. Step 5: Solve for x
    x = 2,301,730.28/1,619.39
  6. Step 6: Final answer
    x = 1,421.35

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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.