Home / 1,485.15-2,227.67-705.71

Finding the Fourth Proportional to 1,485.15, 2,227.67 and 705.71

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Solution

The fourth proportional to 1,485.15, 2,227.67 and 705.71 is: 1,058.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.15 : 2,227.67 = 705.71 : x
  2. Step 2: Convert to fraction form
    1,485.15/2,227.67 = 705.71/x
  3. Step 3: Cross multiply
    1,485.15x = 2,227.67 × 705.71
  4. Step 4: Simplify right side
    1,485.15x = 1,572,091.39
  5. Step 5: Solve for x
    x = 1,572,091.39/1,485.15
  6. Step 6: Final answer
    x = 1,058.54

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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.