Home / 3,615.81-4,991.59-2,806.46

Finding the Fourth Proportional to 3,615.81, 4,991.59 and 2,806.46

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Solution

The fourth proportional to 3,615.81, 4,991.59 and 2,806.46 is: 3,874.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.81 : 4,991.59 = 2,806.46 : x
  2. Step 2: Convert to fraction form
    3,615.81/4,991.59 = 2,806.46/x
  3. Step 3: Cross multiply
    3,615.81x = 4,991.59 × 2,806.46
  4. Step 4: Simplify right side
    3,615.81x = 14,008,697.67
  5. Step 5: Solve for x
    x = 14,008,697.67/3,615.81
  6. Step 6: Final answer
    x = 3,874.29

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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.