Home / 5,147.04-7,714.80-4,121.76

Finding the Fourth Proportional to 5,147.04, 7,714.80 and 4,121.76

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Solution

The fourth proportional to 5,147.04, 7,714.80 and 4,121.76 is: 6,178.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.04 : 7,714.80 = 4,121.76 : x
  2. Step 2: Convert to fraction form
    5,147.04/7,714.80 = 4,121.76/x
  3. Step 3: Cross multiply
    5,147.04x = 7,714.80 × 4,121.76
  4. Step 4: Simplify right side
    5,147.04x = 31,798,554.05
  5. Step 5: Solve for x
    x = 31,798,554.05/5,147.04
  6. Step 6: Final answer
    x = 6,178.03

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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.