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Finding the Fourth Proportional to 8,805.51, 12,152.84 and 5,449.40

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Solution

The fourth proportional to 8,805.51, 12,152.84 and 5,449.40 is: 7,520.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.51 : 12,152.84 = 5,449.40 : x
  2. Step 2: Convert to fraction form
    8,805.51/12,152.84 = 5,449.40/x
  3. Step 3: Cross multiply
    8,805.51x = 12,152.84 × 5,449.40
  4. Step 4: Simplify right side
    8,805.51x = 66,225,686.30
  5. Step 5: Solve for x
    x = 66,225,686.30/8,805.51
  6. Step 6: Final answer
    x = 7,520.94

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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.