Home / 2,816.42-3,886.50-1,557.43

Finding the Fourth Proportional to 2,816.42, 3,886.50 and 1,557.43

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Solution

The fourth proportional to 2,816.42, 3,886.50 and 1,557.43 is: 2,149.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.42 : 3,886.50 = 1,557.43 : x
  2. Step 2: Convert to fraction form
    2,816.42/3,886.50 = 1,557.43/x
  3. Step 3: Cross multiply
    2,816.42x = 3,886.50 × 1,557.43
  4. Step 4: Simplify right side
    2,816.42x = 6,052,939.06
  5. Step 5: Solve for x
    x = 6,052,939.06/2,816.42
  6. Step 6: Final answer
    x = 2,149.16

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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.