Home / 4,752.36-7,128.51-1,289.61

Finding the Fourth Proportional to 4,752.36, 7,128.51 and 1,289.61

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Solution

The fourth proportional to 4,752.36, 7,128.51 and 1,289.61 is: 1,934.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.36 : 7,128.51 = 1,289.61 : x
  2. Step 2: Convert to fraction form
    4,752.36/7,128.51 = 1,289.61/x
  3. Step 3: Cross multiply
    4,752.36x = 7,128.51 × 1,289.61
  4. Step 4: Simplify right side
    4,752.36x = 9,192,997.78
  5. Step 5: Solve for x
    x = 9,192,997.78/4,752.36
  6. Step 6: Final answer
    x = 1,934.41

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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.