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Finding the Fourth Proportional to 4,979.04, 7,468.92 and 1,690.80

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Solution

The fourth proportional to 4,979.04, 7,468.92 and 1,690.80 is: 2,536.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.04 : 7,468.92 = 1,690.80 : x
  2. Step 2: Convert to fraction form
    4,979.04/7,468.92 = 1,690.80/x
  3. Step 3: Cross multiply
    4,979.04x = 7,468.92 × 1,690.80
  4. Step 4: Simplify right side
    4,979.04x = 12,628,449.94
  5. Step 5: Solve for x
    x = 12,628,449.94/4,979.04
  6. Step 6: Final answer
    x = 2,536.32

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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.