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Finding the Fourth Proportional to 3,418.87, 5,127.54 and 953.63

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Solution

The fourth proportional to 3,418.87, 5,127.54 and 953.63 is: 1,430.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.87 : 5,127.54 = 953.63 : x
  2. Step 2: Convert to fraction form
    3,418.87/5,127.54 = 953.63/x
  3. Step 3: Cross multiply
    3,418.87x = 5,127.54 × 953.63
  4. Step 4: Simplify right side
    3,418.87x = 4,889,775.97
  5. Step 5: Solve for x
    x = 4,889,775.97/3,418.87
  6. Step 6: Final answer
    x = 1,430.23

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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.