Home / 3,875.80-5,811.90-1,683.40

Finding the Fourth Proportional to 3,875.80, 5,811.90 and 1,683.40

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Solution

The fourth proportional to 3,875.80, 5,811.90 and 1,683.40 is: 2,524.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.80 : 5,811.90 = 1,683.40 : x
  2. Step 2: Convert to fraction form
    3,875.80/5,811.90 = 1,683.40/x
  3. Step 3: Cross multiply
    3,875.80x = 5,811.90 × 1,683.40
  4. Step 4: Simplify right side
    3,875.80x = 9,783,752.46
  5. Step 5: Solve for x
    x = 9,783,752.46/3,875.80
  6. Step 6: Final answer
    x = 2,524.32

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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.