Home / 2,816.59-3,886.92-1,557.58

Finding the Fourth Proportional to 2,816.59, 3,886.92 and 1,557.58

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Solution

The fourth proportional to 2,816.59, 3,886.92 and 1,557.58 is: 2,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.59 : 3,886.92 = 1,557.58 : x
  2. Step 2: Convert to fraction form
    2,816.59/3,886.92 = 1,557.58/x
  3. Step 3: Cross multiply
    2,816.59x = 3,886.92 × 1,557.58
  4. Step 4: Simplify right side
    2,816.59x = 6,054,188.85
  5. Step 5: Solve for x
    x = 6,054,188.85/2,816.59
  6. Step 6: Final answer
    x = 2,149.47

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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.