Home / 7,155.12-9,874.14-4,172.76

Finding the Fourth Proportional to 7,155.12, 9,874.14 and 4,172.76

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Solution

The fourth proportional to 7,155.12, 9,874.14 and 4,172.76 is: 5,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.12 : 9,874.14 = 4,172.76 : x
  2. Step 2: Convert to fraction form
    7,155.12/9,874.14 = 4,172.76/x
  3. Step 3: Cross multiply
    7,155.12x = 9,874.14 × 4,172.76
  4. Step 4: Simplify right side
    7,155.12x = 41,202,416.43
  5. Step 5: Solve for x
    x = 41,202,416.43/7,155.12
  6. Step 6: Final answer
    x = 5,758.45

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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.