Home / 1,621.51-2,236.53-1,124.38

Finding the Fourth Proportional to 1,621.51, 2,236.53 and 1,124.38

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Solution

The fourth proportional to 1,621.51, 2,236.53 and 1,124.38 is: 1,550.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.51 : 2,236.53 = 1,124.38 : x
  2. Step 2: Convert to fraction form
    1,621.51/2,236.53 = 1,124.38/x
  3. Step 3: Cross multiply
    1,621.51x = 2,236.53 × 1,124.38
  4. Step 4: Simplify right side
    1,621.51x = 2,514,709.60
  5. Step 5: Solve for x
    x = 2,514,709.60/1,621.51
  6. Step 6: Final answer
    x = 1,550.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.