Home / 3,012.07-4,156.11-1,685.78

Finding the Fourth Proportional to 3,012.07, 4,156.11 and 1,685.78

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Solution

The fourth proportional to 3,012.07, 4,156.11 and 1,685.78 is: 2,326.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.07 : 4,156.11 = 1,685.78 : x
  2. Step 2: Convert to fraction form
    3,012.07/4,156.11 = 1,685.78/x
  3. Step 3: Cross multiply
    3,012.07x = 4,156.11 × 1,685.78
  4. Step 4: Simplify right side
    3,012.07x = 7,006,287.12
  5. Step 5: Solve for x
    x = 7,006,287.12/3,012.07
  6. Step 6: Final answer
    x = 2,326.07

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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.