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Finding the Fourth Proportional to 4,725.12, 7,089.12 and 2,773.20

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Solution

The fourth proportional to 4,725.12, 7,089.12 and 2,773.20 is: 4,160.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,725.12 : 7,089.12 = 2,773.20 : x
  2. Step 2: Convert to fraction form
    4,725.12/7,089.12 = 2,773.20/x
  3. Step 3: Cross multiply
    4,725.12x = 7,089.12 × 2,773.20
  4. Step 4: Simplify right side
    4,725.12x = 19,659,547.58
  5. Step 5: Solve for x
    x = 19,659,547.58/4,725.12
  6. Step 6: Final answer
    x = 4,160.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.