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Finding the Fourth Proportional to 6,482.36, 9,722.78 and 1,865

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Solution

The fourth proportional to 6,482.36, 9,722.78 and 1,865 is: 2,797.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,482.36 : 9,722.78 = 1,865 : x
  2. Step 2: Convert to fraction form
    6,482.36/9,722.78 = 1,865/x
  3. Step 3: Cross multiply
    6,482.36x = 9,722.78 × 1,865
  4. Step 4: Simplify right side
    6,482.36x = 18,132,984.70
  5. Step 5: Solve for x
    x = 18,132,984.70/6,482.36
  6. Step 6: Final answer
    x = 2,797.28

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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.