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Finding the Fourth Proportional to 5,113.54, 7,056.65 and 2,905.54

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Solution

The fourth proportional to 5,113.54, 7,056.65 and 2,905.54 is: 4,009.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.54 : 7,056.65 = 2,905.54 : x
  2. Step 2: Convert to fraction form
    5,113.54/7,056.65 = 2,905.54/x
  3. Step 3: Cross multiply
    5,113.54x = 7,056.65 × 2,905.54
  4. Step 4: Simplify right side
    5,113.54x = 20,503,378.84
  5. Step 5: Solve for x
    x = 20,503,378.84/5,113.54
  6. Step 6: Final answer
    x = 4,009.63

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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.