Home / 3,127.72-4,694.40-1,668.12

Finding the Fourth Proportional to 3,127.72, 4,694.40 and 1,668.12

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Solution

The fourth proportional to 3,127.72, 4,694.40 and 1,668.12 is: 2,503.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.72 : 4,694.40 = 1,668.12 : x
  2. Step 2: Convert to fraction form
    3,127.72/4,694.40 = 1,668.12/x
  3. Step 3: Cross multiply
    3,127.72x = 4,694.40 × 1,668.12
  4. Step 4: Simplify right side
    3,127.72x = 7,830,822.53
  5. Step 5: Solve for x
    x = 7,830,822.53/3,127.72
  6. Step 6: Final answer
    x = 2,503.68

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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.