Home / 2,878.08-3,976.68-2,220.58

Finding the Fourth Proportional to 2,878.08, 3,976.68 and 2,220.58

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Solution

The fourth proportional to 2,878.08, 3,976.68 and 2,220.58 is: 3,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.08 : 3,976.68 = 2,220.58 : x
  2. Step 2: Convert to fraction form
    2,878.08/3,976.68 = 2,220.58/x
  3. Step 3: Cross multiply
    2,878.08x = 3,976.68 × 2,220.58
  4. Step 4: Simplify right side
    2,878.08x = 8,830,536.07
  5. Step 5: Solve for x
    x = 8,830,536.07/2,878.08
  6. Step 6: Final answer
    x = 3,068.20

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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.