Home / 3,718.48-5,131.74-2,146.56

Finding the Fourth Proportional to 3,718.48, 5,131.74 and 2,146.56

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Solution

The fourth proportional to 3,718.48, 5,131.74 and 2,146.56 is: 2,962.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.48 : 5,131.74 = 2,146.56 : x
  2. Step 2: Convert to fraction form
    3,718.48/5,131.74 = 2,146.56/x
  3. Step 3: Cross multiply
    3,718.48x = 5,131.74 × 2,146.56
  4. Step 4: Simplify right side
    3,718.48x = 11,015,587.81
  5. Step 5: Solve for x
    x = 11,015,587.81/3,718.48
  6. Step 6: Final answer
    x = 2,962.39

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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.