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Finding the Fourth Proportional to 5,289.36, 7,969.24 and 4,789.36

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Solution

The fourth proportional to 5,289.36, 7,969.24 and 4,789.36 is: 7,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.36 : 7,969.24 = 4,789.36 : x
  2. Step 2: Convert to fraction form
    5,289.36/7,969.24 = 4,789.36/x
  3. Step 3: Cross multiply
    5,289.36x = 7,969.24 × 4,789.36
  4. Step 4: Simplify right side
    5,289.36x = 38,167,559.29
  5. Step 5: Solve for x
    x = 38,167,559.29/5,289.36
  6. Step 6: Final answer
    x = 7,215.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.