Home / 7,938-10,939.34-5,814.18

Finding the Fourth Proportional to 7,938, 10,939.34 and 5,814.18

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Solution

The fourth proportional to 7,938, 10,939.34 and 5,814.18 is: 8,012.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938 : 10,939.34 = 5,814.18 : x
  2. Step 2: Convert to fraction form
    7,938/10,939.34 = 5,814.18/x
  3. Step 3: Cross multiply
    7,938x = 10,939.34 × 5,814.18
  4. Step 4: Simplify right side
    7,938x = 63,603,291.84
  5. Step 5: Solve for x
    x = 63,603,291.84/7,938
  6. Step 6: Final answer
    x = 8,012.51

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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.