Home / 5,317.68-7,975.56-1,421.16

Finding the Fourth Proportional to 5,317.68, 7,975.56 and 1,421.16

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Solution

The fourth proportional to 5,317.68, 7,975.56 and 1,421.16 is: 2,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.68 : 7,975.56 = 1,421.16 : x
  2. Step 2: Convert to fraction form
    5,317.68/7,975.56 = 1,421.16/x
  3. Step 3: Cross multiply
    5,317.68x = 7,975.56 × 1,421.16
  4. Step 4: Simplify right side
    5,317.68x = 11,334,546.85
  5. Step 5: Solve for x
    x = 11,334,546.85/5,317.68
  6. Step 6: Final answer
    x = 2,131.48

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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.