Home / 1,436.36-2,152.77-612.89

Finding the Fourth Proportional to 1,436.36, 2,152.77 and 612.89

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Solution

The fourth proportional to 1,436.36, 2,152.77 and 612.89 is: 918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.36 : 2,152.77 = 612.89 : x
  2. Step 2: Convert to fraction form
    1,436.36/2,152.77 = 612.89/x
  3. Step 3: Cross multiply
    1,436.36x = 2,152.77 × 612.89
  4. Step 4: Simplify right side
    1,436.36x = 1,319,400.44
  5. Step 5: Solve for x
    x = 1,319,400.44/1,436.36
  6. Step 6: Final answer
    x = 918.58

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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.