Home / 2,381.40-3,570.32-1,147.66

Finding the Fourth Proportional to 2,381.40, 3,570.32 and 1,147.66

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Solution

The fourth proportional to 2,381.40, 3,570.32 and 1,147.66 is: 1,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.40 : 3,570.32 = 1,147.66 : x
  2. Step 2: Convert to fraction form
    2,381.40/3,570.32 = 1,147.66/x
  3. Step 3: Cross multiply
    2,381.40x = 3,570.32 × 1,147.66
  4. Step 4: Simplify right side
    2,381.40x = 4,097,513.45
  5. Step 5: Solve for x
    x = 4,097,513.45/2,381.40
  6. Step 6: Final answer
    x = 1,720.63

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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.