Home / 3,125.20-4,678.20-2,261.20

Finding the Fourth Proportional to 3,125.20, 4,678.20 and 2,261.20

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Solution

The fourth proportional to 3,125.20, 4,678.20 and 2,261.20 is: 3,384.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.20 : 4,678.20 = 2,261.20 : x
  2. Step 2: Convert to fraction form
    3,125.20/4,678.20 = 2,261.20/x
  3. Step 3: Cross multiply
    3,125.20x = 4,678.20 × 2,261.20
  4. Step 4: Simplify right side
    3,125.20x = 10,578,345.84
  5. Step 5: Solve for x
    x = 10,578,345.84/3,125.20
  6. Step 6: Final answer
    x = 3,384.85

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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.