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Finding the Fourth Proportional to 8,555.76, 11,803.68 and 5,367.72

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Solution

The fourth proportional to 8,555.76, 11,803.68 and 5,367.72 is: 7,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.76 : 11,803.68 = 5,367.72 : x
  2. Step 2: Convert to fraction form
    8,555.76/11,803.68 = 5,367.72/x
  3. Step 3: Cross multiply
    8,555.76x = 11,803.68 × 5,367.72
  4. Step 4: Simplify right side
    8,555.76x = 63,358,849.21
  5. Step 5: Solve for x
    x = 63,358,849.21/8,555.76
  6. Step 6: Final answer
    x = 7,405.40

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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.