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Finding the Fourth Proportional to 3,438.99, 5,160.78 and 2,976.08

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Solution

The fourth proportional to 3,438.99, 5,160.78 and 2,976.08 is: 4,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.99 : 5,160.78 = 2,976.08 : x
  2. Step 2: Convert to fraction form
    3,438.99/5,160.78 = 2,976.08/x
  3. Step 3: Cross multiply
    3,438.99x = 5,160.78 × 2,976.08
  4. Step 4: Simplify right side
    3,438.99x = 15,358,868.34
  5. Step 5: Solve for x
    x = 15,358,868.34/3,438.99
  6. Step 6: Final answer
    x = 4,466.10

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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.