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Finding the Fourth Proportional to 4,807.75, 7,211.63 and 1,159.75

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Solution

The fourth proportional to 4,807.75, 7,211.63 and 1,159.75 is: 1,739.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,807.75 : 7,211.63 = 1,159.75 : x
  2. Step 2: Convert to fraction form
    4,807.75/7,211.63 = 1,159.75/x
  3. Step 3: Cross multiply
    4,807.75x = 7,211.63 × 1,159.75
  4. Step 4: Simplify right side
    4,807.75x = 8,363,687.89
  5. Step 5: Solve for x
    x = 8,363,687.89/4,807.75
  6. Step 6: Final answer
    x = 1,739.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.