Home / 2,521.61-3,783.18-1,289.88

Finding the Fourth Proportional to 2,521.61, 3,783.18 and 1,289.88

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Solution

The fourth proportional to 2,521.61, 3,783.18 and 1,289.88 is: 1,935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.61 : 3,783.18 = 1,289.88 : x
  2. Step 2: Convert to fraction form
    2,521.61/3,783.18 = 1,289.88/x
  3. Step 3: Cross multiply
    2,521.61x = 3,783.18 × 1,289.88
  4. Step 4: Simplify right side
    2,521.61x = 4,879,848.22
  5. Step 5: Solve for x
    x = 4,879,848.22/2,521.61
  6. Step 6: Final answer
    x = 1,935.22

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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.