Home / 5,316.12-7,974.18-1,420.56

Finding the Fourth Proportional to 5,316.12, 7,974.18 and 1,420.56

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Solution

The fourth proportional to 5,316.12, 7,974.18 and 1,420.56 is: 2,130.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.12 : 7,974.18 = 1,420.56 : x
  2. Step 2: Convert to fraction form
    5,316.12/7,974.18 = 1,420.56/x
  3. Step 3: Cross multiply
    5,316.12x = 7,974.18 × 1,420.56
  4. Step 4: Simplify right side
    5,316.12x = 11,327,801.14
  5. Step 5: Solve for x
    x = 11,327,801.14/5,316.12
  6. Step 6: Final answer
    x = 2,130.84

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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.