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Finding the Fourth Proportional to 5,267.76, 7,904.40 and 3,418.44

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Solution

The fourth proportional to 5,267.76, 7,904.40 and 3,418.44 is: 5,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,267.76 : 7,904.40 = 3,418.44 : x
  2. Step 2: Convert to fraction form
    5,267.76/7,904.40 = 3,418.44/x
  3. Step 3: Cross multiply
    5,267.76x = 7,904.40 × 3,418.44
  4. Step 4: Simplify right side
    5,267.76x = 27,020,717.14
  5. Step 5: Solve for x
    x = 27,020,717.14/5,267.76
  6. Step 6: Final answer
    x = 5,129.45

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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.