Home / 2,816.89-3,887.93-1,874.32

Finding the Fourth Proportional to 2,816.89, 3,887.93 and 1,874.32

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Solution

The fourth proportional to 2,816.89, 3,887.93 and 1,874.32 is: 2,586.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.89 : 3,887.93 = 1,874.32 : x
  2. Step 2: Convert to fraction form
    2,816.89/3,887.93 = 1,874.32/x
  3. Step 3: Cross multiply
    2,816.89x = 3,887.93 × 1,874.32
  4. Step 4: Simplify right side
    2,816.89x = 7,287,224.96
  5. Step 5: Solve for x
    x = 7,287,224.96/2,816.89
  6. Step 6: Final answer
    x = 2,586.98

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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.