Home / 2,887.43-3,984.66-1,561.14

Finding the Fourth Proportional to 2,887.43, 3,984.66 and 1,561.14

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Solution

The fourth proportional to 2,887.43, 3,984.66 and 1,561.14 is: 2,154.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.43 : 3,984.66 = 1,561.14 : x
  2. Step 2: Convert to fraction form
    2,887.43/3,984.66 = 1,561.14/x
  3. Step 3: Cross multiply
    2,887.43x = 3,984.66 × 1,561.14
  4. Step 4: Simplify right side
    2,887.43x = 6,220,588.29
  5. Step 5: Solve for x
    x = 6,220,588.29/2,887.43
  6. Step 6: Final answer
    x = 2,154.37

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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.