Home / 3,983.59-5,975.36-1,386.50

Finding the Fourth Proportional to 3,983.59, 5,975.36 and 1,386.50

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Solution

The fourth proportional to 3,983.59, 5,975.36 and 1,386.50 is: 2,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.59 : 5,975.36 = 1,386.50 : x
  2. Step 2: Convert to fraction form
    3,983.59/5,975.36 = 1,386.50/x
  3. Step 3: Cross multiply
    3,983.59x = 5,975.36 × 1,386.50
  4. Step 4: Simplify right side
    3,983.59x = 8,284,829.71
  5. Step 5: Solve for x
    x = 8,284,829.71/3,983.59
  6. Step 6: Final answer
    x = 2,079.74

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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.