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Finding the Fourth Proportional to 8,980.42, 12,394.99 and 5,831.14

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Solution

The fourth proportional to 8,980.42, 12,394.99 and 5,831.14 is: 8,048.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.42 : 12,394.99 = 5,831.14 : x
  2. Step 2: Convert to fraction form
    8,980.42/12,394.99 = 5,831.14/x
  3. Step 3: Cross multiply
    8,980.42x = 12,394.99 × 5,831.14
  4. Step 4: Simplify right side
    8,980.42x = 72,276,860.01
  5. Step 5: Solve for x
    x = 72,276,860.01/8,980.42
  6. Step 6: Final answer
    x = 8,048.28

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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.