Home / 3,177.99-4,385.34-1,851.21

Finding the Fourth Proportional to 3,177.99, 4,385.34 and 1,851.21

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Solution

The fourth proportional to 3,177.99, 4,385.34 and 1,851.21 is: 2,554.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.99 : 4,385.34 = 1,851.21 : x
  2. Step 2: Convert to fraction form
    3,177.99/4,385.34 = 1,851.21/x
  3. Step 3: Cross multiply
    3,177.99x = 4,385.34 × 1,851.21
  4. Step 4: Simplify right side
    3,177.99x = 8,118,185.26
  5. Step 5: Solve for x
    x = 8,118,185.26/3,177.99
  6. Step 6: Final answer
    x = 2,554.50

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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.