Home / 7,220-10,821.36-3,058.72

Finding the Fourth Proportional to 7,220, 10,821.36 and 3,058.72

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Solution

The fourth proportional to 7,220, 10,821.36 and 3,058.72 is: 4,584.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220 : 10,821.36 = 3,058.72 : x
  2. Step 2: Convert to fraction form
    7,220/10,821.36 = 3,058.72/x
  3. Step 3: Cross multiply
    7,220x = 10,821.36 × 3,058.72
  4. Step 4: Simplify right side
    7,220x = 33,099,510.26
  5. Step 5: Solve for x
    x = 33,099,510.26/7,220
  6. Step 6: Final answer
    x = 4,584.42

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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.