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Finding the Fourth Proportional to 4,870.32, 6,721.03 and 2,774.45

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Solution

The fourth proportional to 4,870.32, 6,721.03 and 2,774.45 is: 3,828.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,870.32 : 6,721.03 = 2,774.45 : x
  2. Step 2: Convert to fraction form
    4,870.32/6,721.03 = 2,774.45/x
  3. Step 3: Cross multiply
    4,870.32x = 6,721.03 × 2,774.45
  4. Step 4: Simplify right side
    4,870.32x = 18,647,161.68
  5. Step 5: Solve for x
    x = 18,647,161.68/4,870.32
  6. Step 6: Final answer
    x = 3,828.73

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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.