Home / 5,618.51-8,420.93-3,975.53

Finding the Fourth Proportional to 5,618.51, 8,420.93 and 3,975.53

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Solution

The fourth proportional to 5,618.51, 8,420.93 and 3,975.53 is: 5,958.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.51 : 8,420.93 = 3,975.53 : x
  2. Step 2: Convert to fraction form
    5,618.51/8,420.93 = 3,975.53/x
  3. Step 3: Cross multiply
    5,618.51x = 8,420.93 × 3,975.53
  4. Step 4: Simplify right side
    5,618.51x = 33,477,659.84
  5. Step 5: Solve for x
    x = 33,477,659.84/5,618.51
  6. Step 6: Final answer
    x = 5,958.46

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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.