Home / 4,974.08-6,864-2,878.72

Finding the Fourth Proportional to 4,974.08, 6,864 and 2,878.72

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Solution

The fourth proportional to 4,974.08, 6,864 and 2,878.72 is: 3,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,974.08 : 6,864 = 2,878.72 : x
  2. Step 2: Convert to fraction form
    4,974.08/6,864 = 2,878.72/x
  3. Step 3: Cross multiply
    4,974.08x = 6,864 × 2,878.72
  4. Step 4: Simplify right side
    4,974.08x = 19,759,534.08
  5. Step 5: Solve for x
    x = 19,759,534.08/4,974.08
  6. Step 6: Final answer
    x = 3,972.50

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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.