Home / 1,818.20-2,725.23-777.67

Finding the Fourth Proportional to 1,818.20, 2,725.23 and 777.67

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Solution

The fourth proportional to 1,818.20, 2,725.23 and 777.67 is: 1,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.20 : 2,725.23 = 777.67 : x
  2. Step 2: Convert to fraction form
    1,818.20/2,725.23 = 777.67/x
  3. Step 3: Cross multiply
    1,818.20x = 2,725.23 × 777.67
  4. Step 4: Simplify right side
    1,818.20x = 2,119,329.61
  5. Step 5: Solve for x
    x = 2,119,329.61/1,818.20
  6. Step 6: Final answer
    x = 1,165.62

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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.