Home / 2,816.96-3,887.22-1,557.90

Finding the Fourth Proportional to 2,816.96, 3,887.22 and 1,557.90

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Solution

The fourth proportional to 2,816.96, 3,887.22 and 1,557.90 is: 2,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.96 : 3,887.22 = 1,557.90 : x
  2. Step 2: Convert to fraction form
    2,816.96/3,887.22 = 1,557.90/x
  3. Step 3: Cross multiply
    2,816.96x = 3,887.22 × 1,557.90
  4. Step 4: Simplify right side
    2,816.96x = 6,055,886.19
  5. Step 5: Solve for x
    x = 6,055,886.19/2,816.96
  6. Step 6: Final answer
    x = 2,149.80

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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.