Home / 6,639.35-9,955.86-3,866.79

Finding the Fourth Proportional to 6,639.35, 9,955.86 and 3,866.79

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Solution

The fourth proportional to 6,639.35, 9,955.86 and 3,866.79 is: 5,798.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.35 : 9,955.86 = 3,866.79 : x
  2. Step 2: Convert to fraction form
    6,639.35/9,955.86 = 3,866.79/x
  3. Step 3: Cross multiply
    6,639.35x = 9,955.86 × 3,866.79
  4. Step 4: Simplify right side
    6,639.35x = 38,497,219.89
  5. Step 5: Solve for x
    x = 38,497,219.89/6,639.35
  6. Step 6: Final answer
    x = 5,798.35

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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.