Home / 7,875.36-11,811.41-3,490.02

Finding the Fourth Proportional to 7,875.36, 11,811.41 and 3,490.02

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Solution

The fourth proportional to 7,875.36, 11,811.41 and 3,490.02 is: 5,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.36 : 11,811.41 = 3,490.02 : x
  2. Step 2: Convert to fraction form
    7,875.36/11,811.41 = 3,490.02/x
  3. Step 3: Cross multiply
    7,875.36x = 11,811.41 × 3,490.02
  4. Step 4: Simplify right side
    7,875.36x = 41,221,998.07
  5. Step 5: Solve for x
    x = 41,221,998.07/7,875.36
  6. Step 6: Final answer
    x = 5,234.30

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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.