Home / 2,980.56-4,470.64-1,225.11

Finding the Fourth Proportional to 2,980.56, 4,470.64 and 1,225.11

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Solution

The fourth proportional to 2,980.56, 4,470.64 and 1,225.11 is: 1,837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.56 : 4,470.64 = 1,225.11 : x
  2. Step 2: Convert to fraction form
    2,980.56/4,470.64 = 1,225.11/x
  3. Step 3: Cross multiply
    2,980.56x = 4,470.64 × 1,225.11
  4. Step 4: Simplify right side
    2,980.56x = 5,477,025.77
  5. Step 5: Solve for x
    x = 5,477,025.77/2,980.56
  6. Step 6: Final answer
    x = 1,837.58

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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.