Home / 8,133.74-12,129.57-7,237.79

Finding the Fourth Proportional to 8,133.74, 12,129.57 and 7,237.79

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Solution

The fourth proportional to 8,133.74, 12,129.57 and 7,237.79 is: 10,793.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,133.74 : 12,129.57 = 7,237.79 : x
  2. Step 2: Convert to fraction form
    8,133.74/12,129.57 = 7,237.79/x
  3. Step 3: Cross multiply
    8,133.74x = 12,129.57 × 7,237.79
  4. Step 4: Simplify right side
    8,133.74x = 87,791,280.45
  5. Step 5: Solve for x
    x = 87,791,280.45/8,133.74
  6. Step 6: Final answer
    x = 10,793.47

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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.