Home / 4,985.57-7,478.42-2,135.67

Finding the Fourth Proportional to 4,985.57, 7,478.42 and 2,135.67

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Solution

The fourth proportional to 4,985.57, 7,478.42 and 2,135.67 is: 3,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.57 : 7,478.42 = 2,135.67 : x
  2. Step 2: Convert to fraction form
    4,985.57/7,478.42 = 2,135.67/x
  3. Step 3: Cross multiply
    4,985.57x = 7,478.42 × 2,135.67
  4. Step 4: Simplify right side
    4,985.57x = 15,971,426.56
  5. Step 5: Solve for x
    x = 15,971,426.56/4,985.57
  6. Step 6: Final answer
    x = 3,203.53

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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.