Home / 3,431.08-5,146.62-1,887.40

Finding the Fourth Proportional to 3,431.08, 5,146.62 and 1,887.40

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Solution

The fourth proportional to 3,431.08, 5,146.62 and 1,887.40 is: 2,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.08 : 5,146.62 = 1,887.40 : x
  2. Step 2: Convert to fraction form
    3,431.08/5,146.62 = 1,887.40/x
  3. Step 3: Cross multiply
    3,431.08x = 5,146.62 × 1,887.40
  4. Step 4: Simplify right side
    3,431.08x = 9,713,730.59
  5. Step 5: Solve for x
    x = 9,713,730.59/3,431.08
  6. Step 6: Final answer
    x = 2,831.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.