Home / 8,320.86-11,395.35-8,211.51

Finding the Fourth Proportional to 8,320.86, 11,395.35 and 8,211.51

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Solution

The fourth proportional to 8,320.86, 11,395.35 and 8,211.51 is: 11,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.86 : 11,395.35 = 8,211.51 : x
  2. Step 2: Convert to fraction form
    8,320.86/11,395.35 = 8,211.51/x
  3. Step 3: Cross multiply
    8,320.86x = 11,395.35 × 8,211.51
  4. Step 4: Simplify right side
    8,320.86x = 93,573,030.48
  5. Step 5: Solve for x
    x = 93,573,030.48/8,320.86
  6. Step 6: Final answer
    x = 11,245.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.