Home / 5,165.19-7,747.65-1,878.35

Finding the Fourth Proportional to 5,165.19, 7,747.65 and 1,878.35

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Solution

The fourth proportional to 5,165.19, 7,747.65 and 1,878.35 is: 2,817.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.19 : 7,747.65 = 1,878.35 : x
  2. Step 2: Convert to fraction form
    5,165.19/7,747.65 = 1,878.35/x
  3. Step 3: Cross multiply
    5,165.19x = 7,747.65 × 1,878.35
  4. Step 4: Simplify right side
    5,165.19x = 14,552,759.64
  5. Step 5: Solve for x
    x = 14,552,759.64/5,165.19
  6. Step 6: Final answer
    x = 2,817.47

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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.