Home / 2,783.19-3,838.59-1,788.57

Finding the Fourth Proportional to 2,783.19, 3,838.59 and 1,788.57

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Solution

The fourth proportional to 2,783.19, 3,838.59 and 1,788.57 is: 2,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.19 : 3,838.59 = 1,788.57 : x
  2. Step 2: Convert to fraction form
    2,783.19/3,838.59 = 1,788.57/x
  3. Step 3: Cross multiply
    2,783.19x = 3,838.59 × 1,788.57
  4. Step 4: Simplify right side
    2,783.19x = 6,865,586.92
  5. Step 5: Solve for x
    x = 6,865,586.92/2,783.19
  6. Step 6: Final answer
    x = 2,466.80

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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.