Home / 2,077.86-3,117.62-845.36

Finding the Fourth Proportional to 2,077.86, 3,117.62 and 845.36

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Solution

The fourth proportional to 2,077.86, 3,117.62 and 845.36 is: 1,268.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.86 : 3,117.62 = 845.36 : x
  2. Step 2: Convert to fraction form
    2,077.86/3,117.62 = 845.36/x
  3. Step 3: Cross multiply
    2,077.86x = 3,117.62 × 845.36
  4. Step 4: Simplify right side
    2,077.86x = 2,635,514.81
  5. Step 5: Solve for x
    x = 2,635,514.81/2,077.86
  6. Step 6: Final answer
    x = 1,268.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.