Home / 2,290.10-3,160.14-1,405.76

Finding the Fourth Proportional to 2,290.10, 3,160.14 and 1,405.76

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Solution

The fourth proportional to 2,290.10, 3,160.14 and 1,405.76 is: 1,939.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.10 : 3,160.14 = 1,405.76 : x
  2. Step 2: Convert to fraction form
    2,290.10/3,160.14 = 1,405.76/x
  3. Step 3: Cross multiply
    2,290.10x = 3,160.14 × 1,405.76
  4. Step 4: Simplify right side
    2,290.10x = 4,442,398.41
  5. Step 5: Solve for x
    x = 4,442,398.41/2,290.10
  6. Step 6: Final answer
    x = 1,939.83

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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.