Home / 5,220.72-7,205.76-3,126.06

Finding the Fourth Proportional to 5,220.72, 7,205.76 and 3,126.06

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Solution

The fourth proportional to 5,220.72, 7,205.76 and 3,126.06 is: 4,314.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.72 : 7,205.76 = 3,126.06 : x
  2. Step 2: Convert to fraction form
    5,220.72/7,205.76 = 3,126.06/x
  3. Step 3: Cross multiply
    5,220.72x = 7,205.76 × 3,126.06
  4. Step 4: Simplify right side
    5,220.72x = 22,525,638.11
  5. Step 5: Solve for x
    x = 22,525,638.11/5,220.72
  6. Step 6: Final answer
    x = 4,314.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.