Home / 7,138.89-10,705.66-2,457.57

Finding the Fourth Proportional to 7,138.89, 10,705.66 and 2,457.57

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Solution

The fourth proportional to 7,138.89, 10,705.66 and 2,457.57 is: 3,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.89 : 10,705.66 = 2,457.57 : x
  2. Step 2: Convert to fraction form
    7,138.89/10,705.66 = 2,457.57/x
  3. Step 3: Cross multiply
    7,138.89x = 10,705.66 × 2,457.57
  4. Step 4: Simplify right side
    7,138.89x = 26,309,908.85
  5. Step 5: Solve for x
    x = 26,309,908.85/7,138.89
  6. Step 6: Final answer
    x = 3,685.43

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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.