Home / 3,407.28-5,113.80-1,869.36

Finding the Fourth Proportional to 3,407.28, 5,113.80 and 1,869.36

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Solution

The fourth proportional to 3,407.28, 5,113.80 and 1,869.36 is: 2,805.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.28 : 5,113.80 = 1,869.36 : x
  2. Step 2: Convert to fraction form
    3,407.28/5,113.80 = 1,869.36/x
  3. Step 3: Cross multiply
    3,407.28x = 5,113.80 × 1,869.36
  4. Step 4: Simplify right side
    3,407.28x = 9,559,533.17
  5. Step 5: Solve for x
    x = 9,559,533.17/3,407.28
  6. Step 6: Final answer
    x = 2,805.62

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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.