Home / 5,243.84-7,863.36-1,780.16

Finding the Fourth Proportional to 5,243.84, 7,863.36 and 1,780.16

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Solution

The fourth proportional to 5,243.84, 7,863.36 and 1,780.16 is: 2,669.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.84 : 7,863.36 = 1,780.16 : x
  2. Step 2: Convert to fraction form
    5,243.84/7,863.36 = 1,780.16/x
  3. Step 3: Cross multiply
    5,243.84x = 7,863.36 × 1,780.16
  4. Step 4: Simplify right side
    5,243.84x = 13,998,038.94
  5. Step 5: Solve for x
    x = 13,998,038.94/5,243.84
  6. Step 6: Final answer
    x = 2,669.43

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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.