Home / 2,540.48-3,810.32-981.22

Finding the Fourth Proportional to 2,540.48, 3,810.32 and 981.22

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Solution

The fourth proportional to 2,540.48, 3,810.32 and 981.22 is: 1,471.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.48 : 3,810.32 = 981.22 : x
  2. Step 2: Convert to fraction form
    2,540.48/3,810.32 = 981.22/x
  3. Step 3: Cross multiply
    2,540.48x = 3,810.32 × 981.22
  4. Step 4: Simplify right side
    2,540.48x = 3,738,743.14
  5. Step 5: Solve for x
    x = 3,738,743.14/2,540.48
  6. Step 6: Final answer
    x = 1,471.67

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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.