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Finding the Fourth Proportional to 3,894, 5,374.22 and 2,570.46

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Solution

The fourth proportional to 3,894, 5,374.22 and 2,570.46 is: 3,547.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894 : 5,374.22 = 2,570.46 : x
  2. Step 2: Convert to fraction form
    3,894/5,374.22 = 2,570.46/x
  3. Step 3: Cross multiply
    3,894x = 5,374.22 × 2,570.46
  4. Step 4: Simplify right side
    3,894x = 13,814,204.69
  5. Step 5: Solve for x
    x = 13,814,204.69/3,894
  6. Step 6: Final answer
    x = 3,547.56

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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.