Home / 1,971.43-2,722.37-1,308.64

Finding the Fourth Proportional to 1,971.43, 2,722.37 and 1,308.64

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Solution

The fourth proportional to 1,971.43, 2,722.37 and 1,308.64 is: 1,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.43 : 2,722.37 = 1,308.64 : x
  2. Step 2: Convert to fraction form
    1,971.43/2,722.37 = 1,308.64/x
  3. Step 3: Cross multiply
    1,971.43x = 2,722.37 × 1,308.64
  4. Step 4: Simplify right side
    1,971.43x = 3,562,602.28
  5. Step 5: Solve for x
    x = 3,562,602.28/1,971.43
  6. Step 6: Final answer
    x = 1,807.12

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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.