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Finding the Fourth Proportional to 5,423.46, 7,484.36 and 2,939.46

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Solution

The fourth proportional to 5,423.46, 7,484.36 and 2,939.46 is: 4,056.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.46 : 7,484.36 = 2,939.46 : x
  2. Step 2: Convert to fraction form
    5,423.46/7,484.36 = 2,939.46/x
  3. Step 3: Cross multiply
    5,423.46x = 7,484.36 × 2,939.46
  4. Step 4: Simplify right side
    5,423.46x = 21,999,976.85
  5. Step 5: Solve for x
    x = 21,999,976.85/5,423.46
  6. Step 6: Final answer
    x = 4,056.45

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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.