Home / 3,099.50-4,278.40-1,857.50

Finding the Fourth Proportional to 3,099.50, 4,278.40 and 1,857.50

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Solution

The fourth proportional to 3,099.50, 4,278.40 and 1,857.50 is: 2,564.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.50 : 4,278.40 = 1,857.50 : x
  2. Step 2: Convert to fraction form
    3,099.50/4,278.40 = 1,857.50/x
  3. Step 3: Cross multiply
    3,099.50x = 4,278.40 × 1,857.50
  4. Step 4: Simplify right side
    3,099.50x = 7,947,128.00
  5. Step 5: Solve for x
    x = 7,947,128.00/3,099.50
  6. Step 6: Final answer
    x = 2,564.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.