Home / 1,669.35-2,303.73-961.21

Finding the Fourth Proportional to 1,669.35, 2,303.73 and 961.21

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Solution

The fourth proportional to 1,669.35, 2,303.73 and 961.21 is: 1,326.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.35 : 2,303.73 = 961.21 : x
  2. Step 2: Convert to fraction form
    1,669.35/2,303.73 = 961.21/x
  3. Step 3: Cross multiply
    1,669.35x = 2,303.73 × 961.21
  4. Step 4: Simplify right side
    1,669.35x = 2,214,371.19
  5. Step 5: Solve for x
    x = 2,214,371.19/1,669.35
  6. Step 6: Final answer
    x = 1,326.48

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1.5x scale

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.