Home / 1,439.37-1,984.86-1,144.08

Finding the Fourth Proportional to 1,439.37, 1,984.86 and 1,144.08

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Solution

The fourth proportional to 1,439.37, 1,984.86 and 1,144.08 is: 1,577.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.37 : 1,984.86 = 1,144.08 : x
  2. Step 2: Convert to fraction form
    1,439.37/1,984.86 = 1,144.08/x
  3. Step 3: Cross multiply
    1,439.37x = 1,984.86 × 1,144.08
  4. Step 4: Simplify right side
    1,439.37x = 2,270,838.63
  5. Step 5: Solve for x
    x = 2,270,838.63/1,439.37
  6. Step 6: Final answer
    x = 1,577.66

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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.