Home / 5,918-8,170.86-3,680.80

Finding the Fourth Proportional to 5,918, 8,170.86 and 3,680.80

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Solution

The fourth proportional to 5,918, 8,170.86 and 3,680.80 is: 5,082.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918 : 8,170.86 = 3,680.80 : x
  2. Step 2: Convert to fraction form
    5,918/8,170.86 = 3,680.80/x
  3. Step 3: Cross multiply
    5,918x = 8,170.86 × 3,680.80
  4. Step 4: Simplify right side
    5,918x = 30,075,301.49
  5. Step 5: Solve for x
    x = 30,075,301.49/5,918
  6. Step 6: Final answer
    x = 5,082.00

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.