Home / 2,621.37-3,615.58-1,780.60

Finding the Fourth Proportional to 2,621.37, 3,615.58 and 1,780.60

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Solution

The fourth proportional to 2,621.37, 3,615.58 and 1,780.60 is: 2,455.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.37 : 3,615.58 = 1,780.60 : x
  2. Step 2: Convert to fraction form
    2,621.37/3,615.58 = 1,780.60/x
  3. Step 3: Cross multiply
    2,621.37x = 3,615.58 × 1,780.60
  4. Step 4: Simplify right side
    2,621.37x = 6,437,901.75
  5. Step 5: Solve for x
    x = 6,437,901.75/2,621.37
  6. Step 6: Final answer
    x = 2,455.93

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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.