Home / 8,339.79-11,512.35-6,211.56

Finding the Fourth Proportional to 8,339.79, 11,512.35 and 6,211.56

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Solution

The fourth proportional to 8,339.79, 11,512.35 and 6,211.56 is: 8,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.79 : 11,512.35 = 6,211.56 : x
  2. Step 2: Convert to fraction form
    8,339.79/11,512.35 = 6,211.56/x
  3. Step 3: Cross multiply
    8,339.79x = 11,512.35 × 6,211.56
  4. Step 4: Simplify right side
    8,339.79x = 71,509,652.77
  5. Step 5: Solve for x
    x = 71,509,652.77/8,339.79
  6. Step 6: Final answer
    x = 8,574.51

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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.