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Finding the Fourth Proportional to 5,423.63, 7,484.61 and 2,939.63

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Solution

The fourth proportional to 5,423.63, 7,484.61 and 2,939.63 is: 4,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.63 : 7,484.61 = 2,939.63 : x
  2. Step 2: Convert to fraction form
    5,423.63/7,484.61 = 2,939.63/x
  3. Step 3: Cross multiply
    5,423.63x = 7,484.61 × 2,939.63
  4. Step 4: Simplify right side
    5,423.63x = 22,001,984.09
  5. Step 5: Solve for x
    x = 22,001,984.09/5,423.63
  6. Step 6: Final answer
    x = 4,056.69

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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.