Home / 1,928.45-2,878.40-1,881.83

Finding the Fourth Proportional to 1,928.45, 2,878.40 and 1,881.83

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Solution

The fourth proportional to 1,928.45, 2,878.40 and 1,881.83 is: 2,808.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.45 : 2,878.40 = 1,881.83 : x
  2. Step 2: Convert to fraction form
    1,928.45/2,878.40 = 1,881.83/x
  3. Step 3: Cross multiply
    1,928.45x = 2,878.40 × 1,881.83
  4. Step 4: Simplify right side
    1,928.45x = 5,416,635.67
  5. Step 5: Solve for x
    x = 5,416,635.67/1,928.45
  6. Step 6: Final answer
    x = 2,808.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.