Home / 2,152.20-2,971.32-1,407.41

Finding the Fourth Proportional to 2,152.20, 2,971.32 and 1,407.41

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Solution

The fourth proportional to 2,152.20, 2,971.32 and 1,407.41 is: 1,943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.20 : 2,971.32 = 1,407.41 : x
  2. Step 2: Convert to fraction form
    2,152.20/2,971.32 = 1,407.41/x
  3. Step 3: Cross multiply
    2,152.20x = 2,971.32 × 1,407.41
  4. Step 4: Simplify right side
    2,152.20x = 4,181,850.62
  5. Step 5: Solve for x
    x = 4,181,850.62/2,152.20
  6. Step 6: Final answer
    x = 1,943.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.