Home / 1,358.05-2,039.81-1,319.77

Finding the Fourth Proportional to 1,358.05, 2,039.81 and 1,319.77

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Solution

The fourth proportional to 1,358.05, 2,039.81 and 1,319.77 is: 1,982.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.05 : 2,039.81 = 1,319.77 : x
  2. Step 2: Convert to fraction form
    1,358.05/2,039.81 = 1,319.77/x
  3. Step 3: Cross multiply
    1,358.05x = 2,039.81 × 1,319.77
  4. Step 4: Simplify right side
    1,358.05x = 2,692,080.04
  5. Step 5: Solve for x
    x = 2,692,080.04/1,358.05
  6. Step 6: Final answer
    x = 1,982.31

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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.