Home / 1,319.68-1,976.32-1,210.24

Finding the Fourth Proportional to 1,319.68, 1,976.32 and 1,210.24

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Solution

The fourth proportional to 1,319.68, 1,976.32 and 1,210.24 is: 1,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.68 : 1,976.32 = 1,210.24 : x
  2. Step 2: Convert to fraction form
    1,319.68/1,976.32 = 1,210.24/x
  3. Step 3: Cross multiply
    1,319.68x = 1,976.32 × 1,210.24
  4. Step 4: Simplify right side
    1,319.68x = 2,391,821.52
  5. Step 5: Solve for x
    x = 2,391,821.52/1,319.68
  6. Step 6: Final answer
    x = 1,812.43

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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.