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Finding the Fourth Proportional to 2,906.84, 4,011.54 and 1,580.65

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Solution

The fourth proportional to 2,906.84, 4,011.54 and 1,580.65 is: 2,181.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906.84 : 4,011.54 = 1,580.65 : x
  2. Step 2: Convert to fraction form
    2,906.84/4,011.54 = 1,580.65/x
  3. Step 3: Cross multiply
    2,906.84x = 4,011.54 × 1,580.65
  4. Step 4: Simplify right side
    2,906.84x = 6,340,840.70
  5. Step 5: Solve for x
    x = 6,340,840.70/2,906.84
  6. Step 6: Final answer
    x = 2,181.35

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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.