Home / 6,415.80-9,616.96-2,720.28

Finding the Fourth Proportional to 6,415.80, 9,616.96 and 2,720.28

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Solution

The fourth proportional to 6,415.80, 9,616.96 and 2,720.28 is: 4,077.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.80 : 9,616.96 = 2,720.28 : x
  2. Step 2: Convert to fraction form
    6,415.80/9,616.96 = 2,720.28/x
  3. Step 3: Cross multiply
    6,415.80x = 9,616.96 × 2,720.28
  4. Step 4: Simplify right side
    6,415.80x = 26,160,823.95
  5. Step 5: Solve for x
    x = 26,160,823.95/6,415.80
  6. Step 6: Final answer
    x = 4,077.56

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1.5x scale

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.