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Finding the Fourth Proportional to 4,870.62, 6,721.47 and 2,774.73

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Solution

The fourth proportional to 4,870.62, 6,721.47 and 2,774.73 is: 3,829.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,870.62 : 6,721.47 = 2,774.73 : x
  2. Step 2: Convert to fraction form
    4,870.62/6,721.47 = 2,774.73/x
  3. Step 3: Cross multiply
    4,870.62x = 6,721.47 × 2,774.73
  4. Step 4: Simplify right side
    4,870.62x = 18,650,264.45
  5. Step 5: Solve for x
    x = 18,650,264.45/4,870.62
  6. Step 6: Final answer
    x = 3,829.14

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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.