Home / 6,511.80-9,768.30-2,615.40

Finding the Fourth Proportional to 6,511.80, 9,768.30 and 2,615.40

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Solution

The fourth proportional to 6,511.80, 9,768.30 and 2,615.40 is: 3,923.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.80 : 9,768.30 = 2,615.40 : x
  2. Step 2: Convert to fraction form
    6,511.80/9,768.30 = 2,615.40/x
  3. Step 3: Cross multiply
    6,511.80x = 9,768.30 × 2,615.40
  4. Step 4: Simplify right side
    6,511.80x = 25,548,011.82
  5. Step 5: Solve for x
    x = 25,548,011.82/6,511.80
  6. Step 6: Final answer
    x = 3,923.34

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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.