Home / 2,887.49-3,984.65-1,628.58

Finding the Fourth Proportional to 2,887.49, 3,984.65 and 1,628.58

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Solution

The fourth proportional to 2,887.49, 3,984.65 and 1,628.58 is: 2,247.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.49 : 3,984.65 = 1,628.58 : x
  2. Step 2: Convert to fraction form
    2,887.49/3,984.65 = 1,628.58/x
  3. Step 3: Cross multiply
    2,887.49x = 3,984.65 × 1,628.58
  4. Step 4: Simplify right side
    2,887.49x = 6,489,313.15
  5. Step 5: Solve for x
    x = 6,489,313.15/2,887.49
  6. Step 6: Final answer
    x = 2,247.39

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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.