Home / 1,458.18-2,012.04-961.65

Finding the Fourth Proportional to 1,458.18, 2,012.04 and 961.65

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Solution

The fourth proportional to 1,458.18, 2,012.04 and 961.65 is: 1,326.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.18 : 2,012.04 = 961.65 : x
  2. Step 2: Convert to fraction form
    1,458.18/2,012.04 = 961.65/x
  3. Step 3: Cross multiply
    1,458.18x = 2,012.04 × 961.65
  4. Step 4: Simplify right side
    1,458.18x = 1,934,878.27
  5. Step 5: Solve for x
    x = 1,934,878.27/1,458.18
  6. Step 6: Final answer
    x = 1,326.91

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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.