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Finding the Fourth Proportional to 3,556.79, 4,908.64 and 1,963.74

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Solution

The fourth proportional to 3,556.79, 4,908.64 and 1,963.74 is: 2,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.79 : 4,908.64 = 1,963.74 : x
  2. Step 2: Convert to fraction form
    3,556.79/4,908.64 = 1,963.74/x
  3. Step 3: Cross multiply
    3,556.79x = 4,908.64 × 1,963.74
  4. Step 4: Simplify right side
    3,556.79x = 9,639,302.53
  5. Step 5: Solve for x
    x = 9,639,302.53/3,556.79
  6. Step 6: Final answer
    x = 2,710.11

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1.5x scale

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.