Home / 5,389.14-8,079.90-1,878.36

Finding the Fourth Proportional to 5,389.14, 8,079.90 and 1,878.36

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Solution

The fourth proportional to 5,389.14, 8,079.90 and 1,878.36 is: 2,816.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.14 : 8,079.90 = 1,878.36 : x
  2. Step 2: Convert to fraction form
    5,389.14/8,079.90 = 1,878.36/x
  3. Step 3: Cross multiply
    5,389.14x = 8,079.90 × 1,878.36
  4. Step 4: Simplify right side
    5,389.14x = 15,176,960.96
  5. Step 5: Solve for x
    x = 15,176,960.96/5,389.14
  6. Step 6: Final answer
    x = 2,816.21

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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.