Home / 1,439.32-2,160.06-1,055.56

Finding the Fourth Proportional to 1,439.32, 2,160.06 and 1,055.56

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Solution

The fourth proportional to 1,439.32, 2,160.06 and 1,055.56 is: 1,584.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.32 : 2,160.06 = 1,055.56 : x
  2. Step 2: Convert to fraction form
    1,439.32/2,160.06 = 1,055.56/x
  3. Step 3: Cross multiply
    1,439.32x = 2,160.06 × 1,055.56
  4. Step 4: Simplify right side
    1,439.32x = 2,280,072.93
  5. Step 5: Solve for x
    x = 2,280,072.93/1,439.32
  6. Step 6: Final answer
    x = 1,584.13

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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.