Home / 2,218.02-3,060.61-1,378.86

Finding the Fourth Proportional to 2,218.02, 3,060.61 and 1,378.86

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Solution

The fourth proportional to 2,218.02, 3,060.61 and 1,378.86 is: 1,902.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.02 : 3,060.61 = 1,378.86 : x
  2. Step 2: Convert to fraction form
    2,218.02/3,060.61 = 1,378.86/x
  3. Step 3: Cross multiply
    2,218.02x = 3,060.61 × 1,378.86
  4. Step 4: Simplify right side
    2,218.02x = 4,220,152.70
  5. Step 5: Solve for x
    x = 4,220,152.70/2,218.02
  6. Step 6: Final answer
    x = 1,902.67

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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.