Home / 2,140.75-3,204.94-1,316.53

Finding the Fourth Proportional to 2,140.75, 3,204.94 and 1,316.53

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Solution

The fourth proportional to 2,140.75, 3,204.94 and 1,316.53 is: 1,970.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.75 : 3,204.94 = 1,316.53 : x
  2. Step 2: Convert to fraction form
    2,140.75/3,204.94 = 1,316.53/x
  3. Step 3: Cross multiply
    2,140.75x = 3,204.94 × 1,316.53
  4. Step 4: Simplify right side
    2,140.75x = 4,219,397.53
  5. Step 5: Solve for x
    x = 4,219,397.53/2,140.75
  6. Step 6: Final answer
    x = 1,970.99

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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.