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Finding the Fourth Proportional to 5,376.94, 8,065.90 and 1,866.40

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Solution

The fourth proportional to 5,376.94, 8,065.90 and 1,866.40 is: 2,799.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,376.94 : 8,065.90 = 1,866.40 : x
  2. Step 2: Convert to fraction form
    5,376.94/8,065.90 = 1,866.40/x
  3. Step 3: Cross multiply
    5,376.94x = 8,065.90 × 1,866.40
  4. Step 4: Simplify right side
    5,376.94x = 15,054,195.76
  5. Step 5: Solve for x
    x = 15,054,195.76/5,376.94
  6. Step 6: Final answer
    x = 2,799.77

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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.