Home / 6,639.87-9,960.30-1,709.55

Finding the Fourth Proportional to 6,639.87, 9,960.30 and 1,709.55

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Solution

The fourth proportional to 6,639.87, 9,960.30 and 1,709.55 is: 2,564.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.87 : 9,960.30 = 1,709.55 : x
  2. Step 2: Convert to fraction form
    6,639.87/9,960.30 = 1,709.55/x
  3. Step 3: Cross multiply
    6,639.87x = 9,960.30 × 1,709.55
  4. Step 4: Simplify right side
    6,639.87x = 17,027,630.87
  5. Step 5: Solve for x
    x = 17,027,630.87/6,639.87
  6. Step 6: Final answer
    x = 2,564.45

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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.