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Finding the Fourth Proportional to 4,703.94, 6,489.72 and 2,815.58

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Solution

The fourth proportional to 4,703.94, 6,489.72 and 2,815.58 is: 3,884.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,703.94 : 6,489.72 = 2,815.58 : x
  2. Step 2: Convert to fraction form
    4,703.94/6,489.72 = 2,815.58/x
  3. Step 3: Cross multiply
    4,703.94x = 6,489.72 × 2,815.58
  4. Step 4: Simplify right side
    4,703.94x = 18,272,325.84
  5. Step 5: Solve for x
    x = 18,272,325.84/4,703.94
  6. Step 6: Final answer
    x = 3,884.47

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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.