Home / 1,416.32-2,124.07-722.55

Finding the Fourth Proportional to 1,416.32, 2,124.07 and 722.55

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Solution

The fourth proportional to 1,416.32, 2,124.07 and 722.55 is: 1,083.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.32 : 2,124.07 = 722.55 : x
  2. Step 2: Convert to fraction form
    1,416.32/2,124.07 = 722.55/x
  3. Step 3: Cross multiply
    1,416.32x = 2,124.07 × 722.55
  4. Step 4: Simplify right side
    1,416.32x = 1,534,752.09
  5. Step 5: Solve for x
    x = 1,534,752.09/1,416.32
  6. Step 6: Final answer
    x = 1,083.62

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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.