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Finding the Fourth Proportional to 8,683.40, 12,948.83 and 8,604.46

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Solution

The fourth proportional to 8,683.40, 12,948.83 and 8,604.46 is: 12,831.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.40 : 12,948.83 = 8,604.46 : x
  2. Step 2: Convert to fraction form
    8,683.40/12,948.83 = 8,604.46/x
  3. Step 3: Cross multiply
    8,683.40x = 12,948.83 × 8,604.46
  4. Step 4: Simplify right side
    8,683.40x = 111,417,614.39
  5. Step 5: Solve for x
    x = 111,417,614.39/8,683.40
  6. Step 6: Final answer
    x = 12,831.11

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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.