Home / 5,085.38-7,021.09-3,491.51

Finding the Fourth Proportional to 5,085.38, 7,021.09 and 3,491.51

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Solution

The fourth proportional to 5,085.38, 7,021.09 and 3,491.51 is: 4,820.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.38 : 7,021.09 = 3,491.51 : x
  2. Step 2: Convert to fraction form
    5,085.38/7,021.09 = 3,491.51/x
  3. Step 3: Cross multiply
    5,085.38x = 7,021.09 × 3,491.51
  4. Step 4: Simplify right side
    5,085.38x = 24,514,208.22
  5. Step 5: Solve for x
    x = 24,514,208.22/5,085.38
  6. Step 6: Final answer
    x = 4,820.53

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Half scale
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Double scale
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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.