Home / 2,887.37-3,984.57-1,561.07

Finding the Fourth Proportional to 2,887.37, 3,984.57 and 1,561.07

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Solution

The fourth proportional to 2,887.37, 3,984.57 and 1,561.07 is: 2,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.37 : 3,984.57 = 1,561.07 : x
  2. Step 2: Convert to fraction form
    2,887.37/3,984.57 = 1,561.07/x
  3. Step 3: Cross multiply
    2,887.37x = 3,984.57 × 1,561.07
  4. Step 4: Simplify right side
    2,887.37x = 6,220,200.70
  5. Step 5: Solve for x
    x = 6,220,200.70/2,887.37
  6. Step 6: Final answer
    x = 2,154.28

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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.