Home / 1,697.74-2,543.06-1,078.38

Finding the Fourth Proportional to 1,697.74, 2,543.06 and 1,078.38

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Solution

The fourth proportional to 1,697.74, 2,543.06 and 1,078.38 is: 1,615.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.74 : 2,543.06 = 1,078.38 : x
  2. Step 2: Convert to fraction form
    1,697.74/2,543.06 = 1,078.38/x
  3. Step 3: Cross multiply
    1,697.74x = 2,543.06 × 1,078.38
  4. Step 4: Simplify right side
    1,697.74x = 2,742,385.04
  5. Step 5: Solve for x
    x = 2,742,385.04/1,697.74
  6. Step 6: Final answer
    x = 1,615.32

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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.