Home / 7,822.79-11,734.18-3,142.80

Finding the Fourth Proportional to 7,822.79, 11,734.18 and 3,142.80

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Solution

The fourth proportional to 7,822.79, 11,734.18 and 3,142.80 is: 4,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,822.79 : 11,734.18 = 3,142.80 : x
  2. Step 2: Convert to fraction form
    7,822.79/11,734.18 = 3,142.80/x
  3. Step 3: Cross multiply
    7,822.79x = 11,734.18 × 3,142.80
  4. Step 4: Simplify right side
    7,822.79x = 36,878,184.83
  5. Step 5: Solve for x
    x = 36,878,184.83/7,822.79
  6. Step 6: Final answer
    x = 4,714.20

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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.