Home / 5,173.34-7,139.37-2,815.64

Finding the Fourth Proportional to 5,173.34, 7,139.37 and 2,815.64

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Solution

The fourth proportional to 5,173.34, 7,139.37 and 2,815.64 is: 3,885.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.34 : 7,139.37 = 2,815.64 : x
  2. Step 2: Convert to fraction form
    5,173.34/7,139.37 = 2,815.64/x
  3. Step 3: Cross multiply
    5,173.34x = 7,139.37 × 2,815.64
  4. Step 4: Simplify right side
    5,173.34x = 20,101,895.75
  5. Step 5: Solve for x
    x = 20,101,895.75/5,173.34
  6. Step 6: Final answer
    x = 3,885.67

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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.