Home / 5,316.21-7,974.09-1,420.50

Finding the Fourth Proportional to 5,316.21, 7,974.09 and 1,420.50

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Solution

The fourth proportional to 5,316.21, 7,974.09 and 1,420.50 is: 2,130.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.21 : 7,974.09 = 1,420.50 : x
  2. Step 2: Convert to fraction form
    5,316.21/7,974.09 = 1,420.50/x
  3. Step 3: Cross multiply
    5,316.21x = 7,974.09 × 1,420.50
  4. Step 4: Simplify right side
    5,316.21x = 11,327,194.85
  5. Step 5: Solve for x
    x = 11,327,194.85/5,316.21
  6. Step 6: Final answer
    x = 2,130.69

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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.