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Finding the Fourth Proportional to 3,290.55, 4,943.49 and 3,113.55

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Solution

The fourth proportional to 3,290.55, 4,943.49 and 3,113.55 is: 4,677.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.55 : 4,943.49 = 3,113.55 : x
  2. Step 2: Convert to fraction form
    3,290.55/4,943.49 = 3,113.55/x
  3. Step 3: Cross multiply
    3,290.55x = 4,943.49 × 3,113.55
  4. Step 4: Simplify right side
    3,290.55x = 15,391,803.29
  5. Step 5: Solve for x
    x = 15,391,803.29/3,290.55
  6. Step 6: Final answer
    x = 4,677.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.