Home / 1,489.32-2,054.55-1,090.35

Finding the Fourth Proportional to 1,489.32, 2,054.55 and 1,090.35

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Solution

The fourth proportional to 1,489.32, 2,054.55 and 1,090.35 is: 1,504.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.32 : 2,054.55 = 1,090.35 : x
  2. Step 2: Convert to fraction form
    1,489.32/2,054.55 = 1,090.35/x
  3. Step 3: Cross multiply
    1,489.32x = 2,054.55 × 1,090.35
  4. Step 4: Simplify right side
    1,489.32x = 2,240,178.59
  5. Step 5: Solve for x
    x = 2,240,178.59/1,489.32
  6. Step 6: Final answer
    x = 1,504.16

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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.