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Finding the Fourth Proportional to 3,518.66, 5,278.58 and 1,570.79

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Solution

The fourth proportional to 3,518.66, 5,278.58 and 1,570.79 is: 2,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.66 : 5,278.58 = 1,570.79 : x
  2. Step 2: Convert to fraction form
    3,518.66/5,278.58 = 1,570.79/x
  3. Step 3: Cross multiply
    3,518.66x = 5,278.58 × 1,570.79
  4. Step 4: Simplify right side
    3,518.66x = 8,291,540.68
  5. Step 5: Solve for x
    x = 8,291,540.68/3,518.66
  6. Step 6: Final answer
    x = 2,356.45

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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.