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Finding the Fourth Proportional to 4,687.54, 7,000.87 and 4,247.90

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Solution

The fourth proportional to 4,687.54, 7,000.87 and 4,247.90 is: 6,344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.54 : 7,000.87 = 4,247.90 : x
  2. Step 2: Convert to fraction form
    4,687.54/7,000.87 = 4,247.90/x
  3. Step 3: Cross multiply
    4,687.54x = 7,000.87 × 4,247.90
  4. Step 4: Simplify right side
    4,687.54x = 29,738,995.67
  5. Step 5: Solve for x
    x = 29,738,995.67/4,687.54
  6. Step 6: Final answer
    x = 6,344.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.