Home / 1,980.04-2,971.09-1,436.71

Finding the Fourth Proportional to 1,980.04, 2,971.09 and 1,436.71

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Solution

The fourth proportional to 1,980.04, 2,971.09 and 1,436.71 is: 2,155.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.04 : 2,971.09 = 1,436.71 : x
  2. Step 2: Convert to fraction form
    1,980.04/2,971.09 = 1,436.71/x
  3. Step 3: Cross multiply
    1,980.04x = 2,971.09 × 1,436.71
  4. Step 4: Simplify right side
    1,980.04x = 4,268,594.71
  5. Step 5: Solve for x
    x = 4,268,594.71/1,980.04
  6. Step 6: Final answer
    x = 2,155.81

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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.