Home / 2,814.88-3,884.76-1,636.40

Finding the Fourth Proportional to 2,814.88, 3,884.76 and 1,636.40

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Solution

The fourth proportional to 2,814.88, 3,884.76 and 1,636.40 is: 2,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.88 : 3,884.76 = 1,636.40 : x
  2. Step 2: Convert to fraction form
    2,814.88/3,884.76 = 1,636.40/x
  3. Step 3: Cross multiply
    2,814.88x = 3,884.76 × 1,636.40
  4. Step 4: Simplify right side
    2,814.88x = 6,357,021.26
  5. Step 5: Solve for x
    x = 6,357,021.26/2,814.88
  6. Step 6: Final answer
    x = 2,258.36

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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.