Home / 6,919.02-10,378.80-2,759.40

Finding the Fourth Proportional to 6,919.02, 10,378.80 and 2,759.40

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Solution

The fourth proportional to 6,919.02, 10,378.80 and 2,759.40 is: 4,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.02 : 10,378.80 = 2,759.40 : x
  2. Step 2: Convert to fraction form
    6,919.02/10,378.80 = 2,759.40/x
  3. Step 3: Cross multiply
    6,919.02x = 10,378.80 × 2,759.40
  4. Step 4: Simplify right side
    6,919.02x = 28,639,260.72
  5. Step 5: Solve for x
    x = 28,639,260.72/6,919.02
  6. Step 6: Final answer
    x = 4,139.21

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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.