Home / 7,172.95-10,764.39-2,790.45

Finding the Fourth Proportional to 7,172.95, 10,764.39 and 2,790.45

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Solution

The fourth proportional to 7,172.95, 10,764.39 and 2,790.45 is: 4,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.95 : 10,764.39 = 2,790.45 : x
  2. Step 2: Convert to fraction form
    7,172.95/10,764.39 = 2,790.45/x
  3. Step 3: Cross multiply
    7,172.95x = 10,764.39 × 2,790.45
  4. Step 4: Simplify right side
    7,172.95x = 30,037,492.08
  5. Step 5: Solve for x
    x = 30,037,492.08/7,172.95
  6. Step 6: Final answer
    x = 4,187.61

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1.5x scale

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.