Home / 5,705.09-7,872.59-3,187.07

Finding the Fourth Proportional to 5,705.09, 7,872.59 and 3,187.07

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Solution

The fourth proportional to 5,705.09, 7,872.59 and 3,187.07 is: 4,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705.09 : 7,872.59 = 3,187.07 : x
  2. Step 2: Convert to fraction form
    5,705.09/7,872.59 = 3,187.07/x
  3. Step 3: Cross multiply
    5,705.09x = 7,872.59 × 3,187.07
  4. Step 4: Simplify right side
    5,705.09x = 25,090,495.41
  5. Step 5: Solve for x
    x = 25,090,495.41/5,705.09
  6. Step 6: Final answer
    x = 4,397.91

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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.