Home / 4,628.81-6,387.68-2,639.39

Finding the Fourth Proportional to 4,628.81, 6,387.68 and 2,639.39

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Solution

The fourth proportional to 4,628.81, 6,387.68 and 2,639.39 is: 3,642.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,628.81 : 6,387.68 = 2,639.39 : x
  2. Step 2: Convert to fraction form
    4,628.81/6,387.68 = 2,639.39/x
  3. Step 3: Cross multiply
    4,628.81x = 6,387.68 × 2,639.39
  4. Step 4: Simplify right side
    4,628.81x = 16,859,578.72
  5. Step 5: Solve for x
    x = 16,859,578.72/4,628.81
  6. Step 6: Final answer
    x = 3,642.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.