Home / 3,578.61-4,938.53-2,680.76

Finding the Fourth Proportional to 3,578.61, 4,938.53 and 2,680.76

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Solution

The fourth proportional to 3,578.61, 4,938.53 and 2,680.76 is: 3,699.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.61 : 4,938.53 = 2,680.76 : x
  2. Step 2: Convert to fraction form
    3,578.61/4,938.53 = 2,680.76/x
  3. Step 3: Cross multiply
    3,578.61x = 4,938.53 × 2,680.76
  4. Step 4: Simplify right side
    3,578.61x = 13,238,999.93
  5. Step 5: Solve for x
    x = 13,238,999.93/3,578.61
  6. Step 6: Final answer
    x = 3,699.48

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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.