Home / 2,887.29-3,984.47-1,628.35

Finding the Fourth Proportional to 2,887.29, 3,984.47 and 1,628.35

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Solution

The fourth proportional to 2,887.29, 3,984.47 and 1,628.35 is: 2,247.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.29 : 3,984.47 = 1,628.35 : x
  2. Step 2: Convert to fraction form
    2,887.29/3,984.47 = 1,628.35/x
  3. Step 3: Cross multiply
    2,887.29x = 3,984.47 × 1,628.35
  4. Step 4: Simplify right side
    2,887.29x = 6,488,111.72
  5. Step 5: Solve for x
    x = 6,488,111.72/2,887.29
  6. Step 6: Final answer
    x = 2,247.13

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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.