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Finding the Fourth Proportional to 3,057.99, 4,220.28 and 1,731.93

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Solution

The fourth proportional to 3,057.99, 4,220.28 and 1,731.93 is: 2,390.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.99 : 4,220.28 = 1,731.93 : x
  2. Step 2: Convert to fraction form
    3,057.99/4,220.28 = 1,731.93/x
  3. Step 3: Cross multiply
    3,057.99x = 4,220.28 × 1,731.93
  4. Step 4: Simplify right side
    3,057.99x = 7,309,225.48
  5. Step 5: Solve for x
    x = 7,309,225.48/3,057.99
  6. Step 6: Final answer
    x = 2,390.21

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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.