Home / 5,185.22-7,157.21-3,196.40

Finding the Fourth Proportional to 5,185.22, 7,157.21 and 3,196.40

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Solution

The fourth proportional to 5,185.22, 7,157.21 and 3,196.40 is: 4,412.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.22 : 7,157.21 = 3,196.40 : x
  2. Step 2: Convert to fraction form
    5,185.22/7,157.21 = 3,196.40/x
  3. Step 3: Cross multiply
    5,185.22x = 7,157.21 × 3,196.40
  4. Step 4: Simplify right side
    5,185.22x = 22,877,254.28
  5. Step 5: Solve for x
    x = 22,877,254.28/5,185.22
  6. Step 6: Final answer
    x = 4,412.02

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1.5x scale

Why These Related Problems?

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