Home / 4,878.09-6,731.71-2,639.92

Finding the Fourth Proportional to 4,878.09, 6,731.71 and 2,639.92

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Solution

The fourth proportional to 4,878.09, 6,731.71 and 2,639.92 is: 3,643.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.09 : 6,731.71 = 2,639.92 : x
  2. Step 2: Convert to fraction form
    4,878.09/6,731.71 = 2,639.92/x
  3. Step 3: Cross multiply
    4,878.09x = 6,731.71 × 2,639.92
  4. Step 4: Simplify right side
    4,878.09x = 17,771,162.33
  5. Step 5: Solve for x
    x = 17,771,162.33/4,878.09
  6. Step 6: Final answer
    x = 3,643.06

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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.