Home / 8,127.78-12,189.85-4,841.81

Finding the Fourth Proportional to 8,127.78, 12,189.85 and 4,841.81

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Solution

The fourth proportional to 8,127.78, 12,189.85 and 4,841.81 is: 7,261.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.78 : 12,189.85 = 4,841.81 : x
  2. Step 2: Convert to fraction form
    8,127.78/12,189.85 = 4,841.81/x
  3. Step 3: Cross multiply
    8,127.78x = 12,189.85 × 4,841.81
  4. Step 4: Simplify right side
    8,127.78x = 59,020,913.42
  5. Step 5: Solve for x
    x = 59,020,913.42/8,127.78
  6. Step 6: Final answer
    x = 7,261.63

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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.