Home / 5,218.99-7,828.62-1,323.70

Finding the Fourth Proportional to 5,218.99, 7,828.62 and 1,323.70

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Solution

The fourth proportional to 5,218.99, 7,828.62 and 1,323.70 is: 1,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.99 : 7,828.62 = 1,323.70 : x
  2. Step 2: Convert to fraction form
    5,218.99/7,828.62 = 1,323.70/x
  3. Step 3: Cross multiply
    5,218.99x = 7,828.62 × 1,323.70
  4. Step 4: Simplify right side
    5,218.99x = 10,362,744.29
  5. Step 5: Solve for x
    x = 10,362,744.29/5,218.99
  6. Step 6: Final answer
    x = 1,985.58

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1.5x scale

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.