Home / 7,827-11,740.38-3,148.20

Finding the Fourth Proportional to 7,827, 11,740.38 and 3,148.20

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Solution

The fourth proportional to 7,827, 11,740.38 and 3,148.20 is: 4,722.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,827 : 11,740.38 = 3,148.20 : x
  2. Step 2: Convert to fraction form
    7,827/11,740.38 = 3,148.20/x
  3. Step 3: Cross multiply
    7,827x = 11,740.38 × 3,148.20
  4. Step 4: Simplify right side
    7,827x = 36,961,064.32
  5. Step 5: Solve for x
    x = 36,961,064.32/7,827
  6. Step 6: Final answer
    x = 4,722.25

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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.