Home / 1,378.43-2,068.41-1,070.90

Finding the Fourth Proportional to 1,378.43, 2,068.41 and 1,070.90

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Solution

The fourth proportional to 1,378.43, 2,068.41 and 1,070.90 is: 1,606.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.43 : 2,068.41 = 1,070.90 : x
  2. Step 2: Convert to fraction form
    1,378.43/2,068.41 = 1,070.90/x
  3. Step 3: Cross multiply
    1,378.43x = 2,068.41 × 1,070.90
  4. Step 4: Simplify right side
    1,378.43x = 2,215,060.27
  5. Step 5: Solve for x
    x = 2,215,060.27/1,378.43
  6. Step 6: Final answer
    x = 1,606.94

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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.