Home / 5,320.13-7,983.86-1,857.38

Finding the Fourth Proportional to 5,320.13, 7,983.86 and 1,857.38

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Solution

The fourth proportional to 5,320.13, 7,983.86 and 1,857.38 is: 2,787.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.13 : 7,983.86 = 1,857.38 : x
  2. Step 2: Convert to fraction form
    5,320.13/7,983.86 = 1,857.38/x
  3. Step 3: Cross multiply
    5,320.13x = 7,983.86 × 1,857.38
  4. Step 4: Simplify right side
    5,320.13x = 14,829,012.68
  5. Step 5: Solve for x
    x = 14,829,012.68/5,320.13
  6. Step 6: Final answer
    x = 2,787.34

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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.