Home / 1,359.05-2,041.31-1,320.77

Finding the Fourth Proportional to 1,359.05, 2,041.31 and 1,320.77

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Solution

The fourth proportional to 1,359.05, 2,041.31 and 1,320.77 is: 1,983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.05 : 2,041.31 = 1,320.77 : x
  2. Step 2: Convert to fraction form
    1,359.05/2,041.31 = 1,320.77/x
  3. Step 3: Cross multiply
    1,359.05x = 2,041.31 × 1,320.77
  4. Step 4: Simplify right side
    1,359.05x = 2,696,101.01
  5. Step 5: Solve for x
    x = 2,696,101.01/1,359.05
  6. Step 6: Final answer
    x = 1,983.81

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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.