Home / 1,471.62-2,208.35-1,320.36

Finding the Fourth Proportional to 1,471.62, 2,208.35 and 1,320.36

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Solution

The fourth proportional to 1,471.62, 2,208.35 and 1,320.36 is: 1,981.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.62 : 2,208.35 = 1,320.36 : x
  2. Step 2: Convert to fraction form
    1,471.62/2,208.35 = 1,320.36/x
  3. Step 3: Cross multiply
    1,471.62x = 2,208.35 × 1,320.36
  4. Step 4: Simplify right side
    1,471.62x = 2,915,804.60
  5. Step 5: Solve for x
    x = 2,915,804.60/1,471.62
  6. Step 6: Final answer
    x = 1,981.35

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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.