Home / 7,904.72-11,858.54-2,639.23

Finding the Fourth Proportional to 7,904.72, 11,858.54 and 2,639.23

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Solution

The fourth proportional to 7,904.72, 11,858.54 and 2,639.23 is: 3,959.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,904.72 : 11,858.54 = 2,639.23 : x
  2. Step 2: Convert to fraction form
    7,904.72/11,858.54 = 2,639.23/x
  3. Step 3: Cross multiply
    7,904.72x = 11,858.54 × 2,639.23
  4. Step 4: Simplify right side
    7,904.72x = 31,297,455.06
  5. Step 5: Solve for x
    x = 31,297,455.06/7,904.72
  6. Step 6: Final answer
    x = 3,959.34

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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.