Home / 4,878.79-6,732.73-2,640.67

Finding the Fourth Proportional to 4,878.79, 6,732.73 and 2,640.67

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Solution

The fourth proportional to 4,878.79, 6,732.73 and 2,640.67 is: 3,644.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.79 : 6,732.73 = 2,640.67 : x
  2. Step 2: Convert to fraction form
    4,878.79/6,732.73 = 2,640.67/x
  3. Step 3: Cross multiply
    4,878.79x = 6,732.73 × 2,640.67
  4. Step 4: Simplify right side
    4,878.79x = 17,778,918.13
  5. Step 5: Solve for x
    x = 17,778,918.13/4,878.79
  6. Step 6: Final answer
    x = 3,644.12

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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.