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Finding the Fourth Proportional to 5,705, 7,873.08 and 3,187.22

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Solution

The fourth proportional to 5,705, 7,873.08 and 3,187.22 is: 4,398.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705 : 7,873.08 = 3,187.22 : x
  2. Step 2: Convert to fraction form
    5,705/7,873.08 = 3,187.22/x
  3. Step 3: Cross multiply
    5,705x = 7,873.08 × 3,187.22
  4. Step 4: Simplify right side
    5,705x = 25,093,222.10
  5. Step 5: Solve for x
    x = 25,093,222.10/5,705
  6. Step 6: Final answer
    x = 4,398.46

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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.