Home / 1,621.71-2,428.37-1,181.15

Finding the Fourth Proportional to 1,621.71, 2,428.37 and 1,181.15

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Solution

The fourth proportional to 1,621.71, 2,428.37 and 1,181.15 is: 1,768.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.71 : 2,428.37 = 1,181.15 : x
  2. Step 2: Convert to fraction form
    1,621.71/2,428.37 = 1,181.15/x
  3. Step 3: Cross multiply
    1,621.71x = 2,428.37 × 1,181.15
  4. Step 4: Simplify right side
    1,621.71x = 2,868,263.32
  5. Step 5: Solve for x
    x = 2,868,263.32/1,621.71
  6. Step 6: Final answer
    x = 1,768.67

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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.