Home / 2,840.68-4,264.56-1,920.31

Finding the Fourth Proportional to 2,840.68, 4,264.56 and 1,920.31

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Solution

The fourth proportional to 2,840.68, 4,264.56 and 1,920.31 is: 2,882.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.68 : 4,264.56 = 1,920.31 : x
  2. Step 2: Convert to fraction form
    2,840.68/4,264.56 = 1,920.31/x
  3. Step 3: Cross multiply
    2,840.68x = 4,264.56 × 1,920.31
  4. Step 4: Simplify right side
    2,840.68x = 8,189,277.21
  5. Step 5: Solve for x
    x = 8,189,277.21/2,840.68
  6. Step 6: Final answer
    x = 2,882.86

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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.