Home / 5,185.41-7,158.80-3,420.10

Finding the Fourth Proportional to 5,185.41, 7,158.80 and 3,420.10

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Solution

The fourth proportional to 5,185.41, 7,158.80 and 3,420.10 is: 4,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.41 : 7,158.80 = 3,420.10 : x
  2. Step 2: Convert to fraction form
    5,185.41/7,158.80 = 3,420.10/x
  3. Step 3: Cross multiply
    5,185.41x = 7,158.80 × 3,420.10
  4. Step 4: Simplify right side
    5,185.41x = 24,483,811.88
  5. Step 5: Solve for x
    x = 24,483,811.88/5,185.41
  6. Step 6: Final answer
    x = 4,721.67

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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.