Home / 1,940.70-2,678.21-1,056.50

Finding the Fourth Proportional to 1,940.70, 2,678.21 and 1,056.50

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Solution

The fourth proportional to 1,940.70, 2,678.21 and 1,056.50 is: 1,457.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.70 : 2,678.21 = 1,056.50 : x
  2. Step 2: Convert to fraction form
    1,940.70/2,678.21 = 1,056.50/x
  3. Step 3: Cross multiply
    1,940.70x = 2,678.21 × 1,056.50
  4. Step 4: Simplify right side
    1,940.70x = 2,829,530.28
  5. Step 5: Solve for x
    x = 2,829,530.28/1,940.70
  6. Step 6: Final answer
    x = 1,457.99

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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.