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Finding the Fourth Proportional to 4,784.32, 7,176.88 and 1,822

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Solution

The fourth proportional to 4,784.32, 7,176.88 and 1,822 is: 2,733.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,784.32 : 7,176.88 = 1,822 : x
  2. Step 2: Convert to fraction form
    4,784.32/7,176.88 = 1,822/x
  3. Step 3: Cross multiply
    4,784.32x = 7,176.88 × 1,822
  4. Step 4: Simplify right side
    4,784.32x = 13,076,275.36
  5. Step 5: Solve for x
    x = 13,076,275.36/4,784.32
  6. Step 6: Final answer
    x = 2,733.15

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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.