Home / 2,887.07-3,984.08-1,628.12

Finding the Fourth Proportional to 2,887.07, 3,984.08 and 1,628.12

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Solution

The fourth proportional to 2,887.07, 3,984.08 and 1,628.12 is: 2,246.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.07 : 3,984.08 = 1,628.12 : x
  2. Step 2: Convert to fraction form
    2,887.07/3,984.08 = 1,628.12/x
  3. Step 3: Cross multiply
    2,887.07x = 3,984.08 × 1,628.12
  4. Step 4: Simplify right side
    2,887.07x = 6,486,562.15
  5. Step 5: Solve for x
    x = 6,486,562.15/2,887.07
  6. Step 6: Final answer
    x = 2,246.77

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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.