Home / 1,980.37-2,969.54-1,055.68

Finding the Fourth Proportional to 1,980.37, 2,969.54 and 1,055.68

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Solution

The fourth proportional to 1,980.37, 2,969.54 and 1,055.68 is: 1,582.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.37 : 2,969.54 = 1,055.68 : x
  2. Step 2: Convert to fraction form
    1,980.37/2,969.54 = 1,055.68/x
  3. Step 3: Cross multiply
    1,980.37x = 2,969.54 × 1,055.68
  4. Step 4: Simplify right side
    1,980.37x = 3,134,888.98
  5. Step 5: Solve for x
    x = 3,134,888.98/1,980.37
  6. Step 6: Final answer
    x = 1,582.98

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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.