Home / 3,551.24-4,900.08-1,979

Finding the Fourth Proportional to 3,551.24, 4,900.08 and 1,979

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Solution

The fourth proportional to 3,551.24, 4,900.08 and 1,979 is: 2,730.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.24 : 4,900.08 = 1,979 : x
  2. Step 2: Convert to fraction form
    3,551.24/4,900.08 = 1,979/x
  3. Step 3: Cross multiply
    3,551.24x = 4,900.08 × 1,979
  4. Step 4: Simplify right side
    3,551.24x = 9,697,258.32
  5. Step 5: Solve for x
    x = 9,697,258.32/3,551.24
  6. Step 6: Final answer
    x = 2,730.67

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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.