Home / 2,124.80-3,187.20-1,476.80

Finding the Fourth Proportional to 2,124.80, 3,187.20 and 1,476.80

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Solution

The fourth proportional to 2,124.80, 3,187.20 and 1,476.80 is: 2,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.80 : 3,187.20 = 1,476.80 : x
  2. Step 2: Convert to fraction form
    2,124.80/3,187.20 = 1,476.80/x
  3. Step 3: Cross multiply
    2,124.80x = 3,187.20 × 1,476.80
  4. Step 4: Simplify right side
    2,124.80x = 4,706,856.96
  5. Step 5: Solve for x
    x = 4,706,856.96/2,124.80
  6. Step 6: Final answer
    x = 2,215.20

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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.