Home / 4,763.60-7,142.40-1,992.20

Finding the Fourth Proportional to 4,763.60, 7,142.40 and 1,992.20

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Solution

The fourth proportional to 4,763.60, 7,142.40 and 1,992.20 is: 2,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,763.60 : 7,142.40 = 1,992.20 : x
  2. Step 2: Convert to fraction form
    4,763.60/7,142.40 = 1,992.20/x
  3. Step 3: Cross multiply
    4,763.60x = 7,142.40 × 1,992.20
  4. Step 4: Simplify right side
    4,763.60x = 14,229,089.28
  5. Step 5: Solve for x
    x = 14,229,089.28/4,763.60
  6. Step 6: Final answer
    x = 2,987.05

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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.