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Finding the Fourth Proportional to 4,714.55, 7,069.80 and 1,940.30

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Solution

The fourth proportional to 4,714.55, 7,069.80 and 1,940.30 is: 2,909.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,714.55 : 7,069.80 = 1,940.30 : x
  2. Step 2: Convert to fraction form
    4,714.55/7,069.80 = 1,940.30/x
  3. Step 3: Cross multiply
    4,714.55x = 7,069.80 × 1,940.30
  4. Step 4: Simplify right side
    4,714.55x = 13,717,532.94
  5. Step 5: Solve for x
    x = 13,717,532.94/4,714.55
  6. Step 6: Final answer
    x = 2,909.62

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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.