Home / 4,975.03-6,864.78-2,878.75

Finding the Fourth Proportional to 4,975.03, 6,864.78 and 2,878.75

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Solution

The fourth proportional to 4,975.03, 6,864.78 and 2,878.75 is: 3,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,975.03 : 6,864.78 = 2,878.75 : x
  2. Step 2: Convert to fraction form
    4,975.03/6,864.78 = 2,878.75/x
  3. Step 3: Cross multiply
    4,975.03x = 6,864.78 × 2,878.75
  4. Step 4: Simplify right side
    4,975.03x = 19,761,985.43
  5. Step 5: Solve for x
    x = 19,761,985.43/4,975.03
  6. Step 6: Final answer
    x = 3,972.23

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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.