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Finding the Fourth Proportional to 4,878.63, 6,732.51 and 2,640.50

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Solution

The fourth proportional to 4,878.63, 6,732.51 and 2,640.50 is: 3,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.63 : 6,732.51 = 2,640.50 : x
  2. Step 2: Convert to fraction form
    4,878.63/6,732.51 = 2,640.50/x
  3. Step 3: Cross multiply
    4,878.63x = 6,732.51 × 2,640.50
  4. Step 4: Simplify right side
    4,878.63x = 17,777,174.34
  5. Step 5: Solve for x
    x = 17,777,174.34/4,878.63
  6. Step 6: Final answer
    x = 3,643.89

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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.