Home / 2,188.44-3,015.71-1,557.86

Finding the Fourth Proportional to 2,188.44, 3,015.71 and 1,557.86

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Solution

The fourth proportional to 2,188.44, 3,015.71 and 1,557.86 is: 2,146.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.44 : 3,015.71 = 1,557.86 : x
  2. Step 2: Convert to fraction form
    2,188.44/3,015.71 = 1,557.86/x
  3. Step 3: Cross multiply
    2,188.44x = 3,015.71 × 1,557.86
  4. Step 4: Simplify right side
    2,188.44x = 4,698,041.05
  5. Step 5: Solve for x
    x = 4,698,041.05/2,188.44
  6. Step 6: Final answer
    x = 2,146.75

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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.