Home / 2,386.45-3,580.35-743.10

Finding the Fourth Proportional to 2,386.45, 3,580.35 and 743.10

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Solution

The fourth proportional to 2,386.45, 3,580.35 and 743.10 is: 1,114.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.45 : 3,580.35 = 743.10 : x
  2. Step 2: Convert to fraction form
    2,386.45/3,580.35 = 743.10/x
  3. Step 3: Cross multiply
    2,386.45x = 3,580.35 × 743.10
  4. Step 4: Simplify right side
    2,386.45x = 2,660,558.09
  5. Step 5: Solve for x
    x = 2,660,558.09/2,386.45
  6. Step 6: Final answer
    x = 1,114.86

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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.