Home / 5,142.96-7,714.80-1,679.04

Finding the Fourth Proportional to 5,142.96, 7,714.80 and 1,679.04

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Solution

The fourth proportional to 5,142.96, 7,714.80 and 1,679.04 is: 2,518.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.96 : 7,714.80 = 1,679.04 : x
  2. Step 2: Convert to fraction form
    5,142.96/7,714.80 = 1,679.04/x
  3. Step 3: Cross multiply
    5,142.96x = 7,714.80 × 1,679.04
  4. Step 4: Simplify right side
    5,142.96x = 12,953,457.79
  5. Step 5: Solve for x
    x = 12,953,457.79/5,142.96
  6. Step 6: Final answer
    x = 2,518.68

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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.