Home / 7,688.40-11,532.60-2,758.20

Finding the Fourth Proportional to 7,688.40, 11,532.60 and 2,758.20

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Solution

The fourth proportional to 7,688.40, 11,532.60 and 2,758.20 is: 4,137.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.40 : 11,532.60 = 2,758.20 : x
  2. Step 2: Convert to fraction form
    7,688.40/11,532.60 = 2,758.20/x
  3. Step 3: Cross multiply
    7,688.40x = 11,532.60 × 2,758.20
  4. Step 4: Simplify right side
    7,688.40x = 31,809,217.32
  5. Step 5: Solve for x
    x = 31,809,217.32/7,688.40
  6. Step 6: Final answer
    x = 4,137.30

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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.