Home / 1,863.47-2,795.79-768.35

Finding the Fourth Proportional to 1,863.47, 2,795.79 and 768.35

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Solution

The fourth proportional to 1,863.47, 2,795.79 and 768.35 is: 1,152.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.47 : 2,795.79 = 768.35 : x
  2. Step 2: Convert to fraction form
    1,863.47/2,795.79 = 768.35/x
  3. Step 3: Cross multiply
    1,863.47x = 2,795.79 × 768.35
  4. Step 4: Simplify right side
    1,863.47x = 2,148,145.25
  5. Step 5: Solve for x
    x = 2,148,145.25/1,863.47
  6. Step 6: Final answer
    x = 1,152.77

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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.