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Finding the Fourth Proportional to 4,703.89, 6,491.92 and 2,815.45

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Solution

The fourth proportional to 4,703.89, 6,491.92 and 2,815.45 is: 3,885.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,703.89 : 6,491.92 = 2,815.45 : x
  2. Step 2: Convert to fraction form
    4,703.89/6,491.92 = 2,815.45/x
  3. Step 3: Cross multiply
    4,703.89x = 6,491.92 × 2,815.45
  4. Step 4: Simplify right side
    4,703.89x = 18,277,676.16
  5. Step 5: Solve for x
    x = 18,277,676.16/4,703.89
  6. Step 6: Final answer
    x = 3,885.65

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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.