Home / 2,938.40-4,411.20-1,623.20

Finding the Fourth Proportional to 2,938.40, 4,411.20 and 1,623.20

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Solution

The fourth proportional to 2,938.40, 4,411.20 and 1,623.20 is: 2,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.40 : 4,411.20 = 1,623.20 : x
  2. Step 2: Convert to fraction form
    2,938.40/4,411.20 = 1,623.20/x
  3. Step 3: Cross multiply
    2,938.40x = 4,411.20 × 1,623.20
  4. Step 4: Simplify right side
    2,938.40x = 7,160,259.84
  5. Step 5: Solve for x
    x = 7,160,259.84/2,938.40
  6. Step 6: Final answer
    x = 2,436.79

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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.