Home / 3,143.64-4,713.30-1,988.04

Finding the Fourth Proportional to 3,143.64, 4,713.30 and 1,988.04

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Solution

The fourth proportional to 3,143.64, 4,713.30 and 1,988.04 is: 2,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.64 : 4,713.30 = 1,988.04 : x
  2. Step 2: Convert to fraction form
    3,143.64/4,713.30 = 1,988.04/x
  3. Step 3: Cross multiply
    3,143.64x = 4,713.30 × 1,988.04
  4. Step 4: Simplify right side
    3,143.64x = 9,370,228.93
  5. Step 5: Solve for x
    x = 9,370,228.93/3,143.64
  6. Step 6: Final answer
    x = 2,980.69

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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.