Home / 3,955.86-5,458.98-2,187.54

Finding the Fourth Proportional to 3,955.86, 5,458.98 and 2,187.54

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Solution

The fourth proportional to 3,955.86, 5,458.98 and 2,187.54 is: 3,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.86 : 5,458.98 = 2,187.54 : x
  2. Step 2: Convert to fraction form
    3,955.86/5,458.98 = 2,187.54/x
  3. Step 3: Cross multiply
    3,955.86x = 5,458.98 × 2,187.54
  4. Step 4: Simplify right side
    3,955.86x = 11,941,737.11
  5. Step 5: Solve for x
    x = 11,941,737.11/3,955.86
  6. Step 6: Final answer
    x = 3,018.75

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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.