Home / 2,187.06-3,280.80-705.93

Finding the Fourth Proportional to 2,187.06, 3,280.80 and 705.93

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Solution

The fourth proportional to 2,187.06, 3,280.80 and 705.93 is: 1,058.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.06 : 3,280.80 = 705.93 : x
  2. Step 2: Convert to fraction form
    2,187.06/3,280.80 = 705.93/x
  3. Step 3: Cross multiply
    2,187.06x = 3,280.80 × 705.93
  4. Step 4: Simplify right side
    2,187.06x = 2,316,015.14
  5. Step 5: Solve for x
    x = 2,316,015.14/2,187.06
  6. Step 6: Final answer
    x = 1,058.96

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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.