Home / 2,788.23-4,180.71-1,921.53

Finding the Fourth Proportional to 2,788.23, 4,180.71 and 1,921.53

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Solution

The fourth proportional to 2,788.23, 4,180.71 and 1,921.53 is: 2,881.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.23 : 4,180.71 = 1,921.53 : x
  2. Step 2: Convert to fraction form
    2,788.23/4,180.71 = 1,921.53/x
  3. Step 3: Cross multiply
    2,788.23x = 4,180.71 × 1,921.53
  4. Step 4: Simplify right side
    2,788.23x = 8,033,359.69
  5. Step 5: Solve for x
    x = 8,033,359.69/2,788.23
  6. Step 6: Final answer
    x = 2,881.17

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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.