Home / 2,688.76-4,026.70-1,297.62

Finding the Fourth Proportional to 2,688.76, 4,026.70 and 1,297.62

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Solution

The fourth proportional to 2,688.76, 4,026.70 and 1,297.62 is: 1,943.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.76 : 4,026.70 = 1,297.62 : x
  2. Step 2: Convert to fraction form
    2,688.76/4,026.70 = 1,297.62/x
  3. Step 3: Cross multiply
    2,688.76x = 4,026.70 × 1,297.62
  4. Step 4: Simplify right side
    2,688.76x = 5,225,126.25
  5. Step 5: Solve for x
    x = 5,225,126.25/2,688.76
  6. Step 6: Final answer
    x = 1,943.32

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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.