Home / 5,221.74-7,205.79-3,127.02

Finding the Fourth Proportional to 5,221.74, 7,205.79 and 3,127.02

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Solution

The fourth proportional to 5,221.74, 7,205.79 and 3,127.02 is: 4,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.74 : 7,205.79 = 3,127.02 : x
  2. Step 2: Convert to fraction form
    5,221.74/7,205.79 = 3,127.02/x
  3. Step 3: Cross multiply
    5,221.74x = 7,205.79 × 3,127.02
  4. Step 4: Simplify right side
    5,221.74x = 22,532,649.45
  5. Step 5: Solve for x
    x = 22,532,649.45/5,221.74
  6. Step 6: Final answer
    x = 4,315.16

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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.