Home / 1,436.42-2,153.39-1,218.47

Finding the Fourth Proportional to 1,436.42, 2,153.39 and 1,218.47

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Solution

The fourth proportional to 1,436.42, 2,153.39 and 1,218.47 is: 1,826.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.42 : 2,153.39 = 1,218.47 : x
  2. Step 2: Convert to fraction form
    1,436.42/2,153.39 = 1,218.47/x
  3. Step 3: Cross multiply
    1,436.42x = 2,153.39 × 1,218.47
  4. Step 4: Simplify right side
    1,436.42x = 2,623,824.25
  5. Step 5: Solve for x
    x = 2,623,824.25/1,436.42
  6. Step 6: Final answer
    x = 1,826.64

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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.