Home / 1,980.35-2,733.01-1,316.76

Finding the Fourth Proportional to 1,980.35, 2,733.01 and 1,316.76

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Solution

The fourth proportional to 1,980.35, 2,733.01 and 1,316.76 is: 1,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.35 : 2,733.01 = 1,316.76 : x
  2. Step 2: Convert to fraction form
    1,980.35/2,733.01 = 1,316.76/x
  3. Step 3: Cross multiply
    1,980.35x = 2,733.01 × 1,316.76
  4. Step 4: Simplify right side
    1,980.35x = 3,598,704.71
  5. Step 5: Solve for x
    x = 3,598,704.71/1,980.35
  6. Step 6: Final answer
    x = 1,817.21

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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.