Home / 2,972.36-4,456.92-1,239.68

Finding the Fourth Proportional to 2,972.36, 4,456.92 and 1,239.68

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Solution

The fourth proportional to 2,972.36, 4,456.92 and 1,239.68 is: 1,858.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.36 : 4,456.92 = 1,239.68 : x
  2. Step 2: Convert to fraction form
    2,972.36/4,456.92 = 1,239.68/x
  3. Step 3: Cross multiply
    2,972.36x = 4,456.92 × 1,239.68
  4. Step 4: Simplify right side
    2,972.36x = 5,525,154.59
  5. Step 5: Solve for x
    x = 5,525,154.59/2,972.36
  6. Step 6: Final answer
    x = 1,858.84

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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.