Home / 7,157.34-9,877.38-4,172.67

Finding the Fourth Proportional to 7,157.34, 9,877.38 and 4,172.67

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Solution

The fourth proportional to 7,157.34, 9,877.38 and 4,172.67 is: 5,758.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.34 : 9,877.38 = 4,172.67 : x
  2. Step 2: Convert to fraction form
    7,157.34/9,877.38 = 4,172.67/x
  3. Step 3: Cross multiply
    7,157.34x = 9,877.38 × 4,172.67
  4. Step 4: Simplify right side
    7,157.34x = 41,215,047.20
  5. Step 5: Solve for x
    x = 41,215,047.20/7,157.34
  6. Step 6: Final answer
    x = 5,758.43

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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.