Home / 4,878.80-6,732.69-2,640.63

Finding the Fourth Proportional to 4,878.80, 6,732.69 and 2,640.63

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Solution

The fourth proportional to 4,878.80, 6,732.69 and 2,640.63 is: 3,644.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.80 : 6,732.69 = 2,640.63 : x
  2. Step 2: Convert to fraction form
    4,878.80/6,732.69 = 2,640.63/x
  3. Step 3: Cross multiply
    4,878.80x = 6,732.69 × 2,640.63
  4. Step 4: Simplify right side
    4,878.80x = 17,778,543.19
  5. Step 5: Solve for x
    x = 17,778,543.19/4,878.80
  6. Step 6: Final answer
    x = 3,644.04

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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.