Home / 2,319.81-3,201.32-1,271.87

Finding the Fourth Proportional to 2,319.81, 3,201.32 and 1,271.87

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Solution

The fourth proportional to 2,319.81, 3,201.32 and 1,271.87 is: 1,755.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.81 : 3,201.32 = 1,271.87 : x
  2. Step 2: Convert to fraction form
    2,319.81/3,201.32 = 1,271.87/x
  3. Step 3: Cross multiply
    2,319.81x = 3,201.32 × 1,271.87
  4. Step 4: Simplify right side
    2,319.81x = 4,071,640.50
  5. Step 5: Solve for x
    x = 4,071,640.50/2,319.81
  6. Step 6: Final answer
    x = 1,755.16

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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.