Home / 2,319.79-3,201.35-1,271.84

Finding the Fourth Proportional to 2,319.79, 3,201.35 and 1,271.84

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Solution

The fourth proportional to 2,319.79, 3,201.35 and 1,271.84 is: 1,755.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.79 : 3,201.35 = 1,271.84 : x
  2. Step 2: Convert to fraction form
    2,319.79/3,201.35 = 1,271.84/x
  3. Step 3: Cross multiply
    2,319.79x = 3,201.35 × 1,271.84
  4. Step 4: Simplify right side
    2,319.79x = 4,071,598.62
  5. Step 5: Solve for x
    x = 4,071,598.62/2,319.79
  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.