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Finding the Fourth Proportional to 5,782.99, 7,980.46 and 3,130.34

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Solution

The fourth proportional to 5,782.99, 7,980.46 and 3,130.34 is: 4,319.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,782.99 : 7,980.46 = 3,130.34 : x
  2. Step 2: Convert to fraction form
    5,782.99/7,980.46 = 3,130.34/x
  3. Step 3: Cross multiply
    5,782.99x = 7,980.46 × 3,130.34
  4. Step 4: Simplify right side
    5,782.99x = 24,981,553.16
  5. Step 5: Solve for x
    x = 24,981,553.16/5,782.99
  6. Step 6: Final answer
    x = 4,319.83

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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.