Home / 7,920.63-11,880.81-2,726.37

Finding the Fourth Proportional to 7,920.63, 11,880.81 and 2,726.37

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Solution

The fourth proportional to 7,920.63, 11,880.81 and 2,726.37 is: 4,089.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.63 : 11,880.81 = 2,726.37 : x
  2. Step 2: Convert to fraction form
    7,920.63/11,880.81 = 2,726.37/x
  3. Step 3: Cross multiply
    7,920.63x = 11,880.81 × 2,726.37
  4. Step 4: Simplify right side
    7,920.63x = 32,391,483.96
  5. Step 5: Solve for x
    x = 32,391,483.96/7,920.63
  6. Step 6: Final answer
    x = 4,089.51

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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.