Home / 3,956.12-5,458.98-2,187.50

Finding the Fourth Proportional to 3,956.12, 5,458.98 and 2,187.50

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Solution

The fourth proportional to 3,956.12, 5,458.98 and 2,187.50 is: 3,018.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.12 : 5,458.98 = 2,187.50 : x
  2. Step 2: Convert to fraction form
    3,956.12/5,458.98 = 2,187.50/x
  3. Step 3: Cross multiply
    3,956.12x = 5,458.98 × 2,187.50
  4. Step 4: Simplify right side
    3,956.12x = 11,941,518.75
  5. Step 5: Solve for x
    x = 11,941,518.75/3,956.12
  6. Step 6: Final answer
    x = 3,018.49

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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.