Home / 3,717.10-5,129.63-2,145.18

Finding the Fourth Proportional to 3,717.10, 5,129.63 and 2,145.18

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Solution

The fourth proportional to 3,717.10, 5,129.63 and 2,145.18 is: 2,960.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.10 : 5,129.63 = 2,145.18 : x
  2. Step 2: Convert to fraction form
    3,717.10/5,129.63 = 2,145.18/x
  3. Step 3: Cross multiply
    3,717.10x = 5,129.63 × 2,145.18
  4. Step 4: Simplify right side
    3,717.10x = 11,003,979.68
  5. Step 5: Solve for x
    x = 11,003,979.68/3,717.10
  6. Step 6: Final answer
    x = 2,960.37

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Half scale
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Double scale
Find fourth proportional to 3,718.10, 5,131.01 and 2,146.18
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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.