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Finding the Fourth Proportional to 7,208.78, 10,813.12 and 2,278.41

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Solution

The fourth proportional to 7,208.78, 10,813.12 and 2,278.41 is: 3,417.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208.78 : 10,813.12 = 2,278.41 : x
  2. Step 2: Convert to fraction form
    7,208.78/10,813.12 = 2,278.41/x
  3. Step 3: Cross multiply
    7,208.78x = 10,813.12 × 2,278.41
  4. Step 4: Simplify right side
    7,208.78x = 24,636,666.67
  5. Step 5: Solve for x
    x = 24,636,666.67/7,208.78
  6. Step 6: Final answer
    x = 3,417.59

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1.5x scale

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.