Home / 4,974.50-6,864.81-2,878.76

Finding the Fourth Proportional to 4,974.50, 6,864.81 and 2,878.76

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Solution

The fourth proportional to 4,974.50, 6,864.81 and 2,878.76 is: 3,972.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,974.50 : 6,864.81 = 2,878.76 : x
  2. Step 2: Convert to fraction form
    4,974.50/6,864.81 = 2,878.76/x
  3. Step 3: Cross multiply
    4,974.50x = 6,864.81 × 2,878.76
  4. Step 4: Simplify right side
    4,974.50x = 19,762,140.44
  5. Step 5: Solve for x
    x = 19,762,140.44/4,974.50
  6. Step 6: Final answer
    x = 3,972.69

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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.