Home / 1,890.39-2,605.95-1,329.06

Finding the Fourth Proportional to 1,890.39, 2,605.95 and 1,329.06

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Solution

The fourth proportional to 1,890.39, 2,605.95 and 1,329.06 is: 1,832.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.39 : 2,605.95 = 1,329.06 : x
  2. Step 2: Convert to fraction form
    1,890.39/2,605.95 = 1,329.06/x
  3. Step 3: Cross multiply
    1,890.39x = 2,605.95 × 1,329.06
  4. Step 4: Simplify right side
    1,890.39x = 3,463,455.28
  5. Step 5: Solve for x
    x = 3,463,455.28/1,890.39
  6. Step 6: Final answer
    x = 1,832.14

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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.