Home / 3,111.52-4,661.20-1,810.28

Finding the Fourth Proportional to 3,111.52, 4,661.20 and 1,810.28

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Solution

The fourth proportional to 3,111.52, 4,661.20 and 1,810.28 is: 2,711.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.52 : 4,661.20 = 1,810.28 : x
  2. Step 2: Convert to fraction form
    3,111.52/4,661.20 = 1,810.28/x
  3. Step 3: Cross multiply
    3,111.52x = 4,661.20 × 1,810.28
  4. Step 4: Simplify right side
    3,111.52x = 8,438,077.14
  5. Step 5: Solve for x
    x = 8,438,077.14/3,111.52
  6. Step 6: Final answer
    x = 2,711.88

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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.