Home / 1,210.27-1,669.37-961.19

Finding the Fourth Proportional to 1,210.27, 1,669.37 and 961.19

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Solution

The fourth proportional to 1,210.27, 1,669.37 and 961.19 is: 1,325.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.27 : 1,669.37 = 961.19 : x
  2. Step 2: Convert to fraction form
    1,210.27/1,669.37 = 961.19/x
  3. Step 3: Cross multiply
    1,210.27x = 1,669.37 × 961.19
  4. Step 4: Simplify right side
    1,210.27x = 1,604,581.75
  5. Step 5: Solve for x
    x = 1,604,581.75/1,210.27
  6. Step 6: Final answer
    x = 1,325.81

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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.