Home / 1,688.06-2,330.64-1,099.60

Finding the Fourth Proportional to 1,688.06, 2,330.64 and 1,099.60

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Solution

The fourth proportional to 1,688.06, 2,330.64 and 1,099.60 is: 1,518.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.06 : 2,330.64 = 1,099.60 : x
  2. Step 2: Convert to fraction form
    1,688.06/2,330.64 = 1,099.60/x
  3. Step 3: Cross multiply
    1,688.06x = 2,330.64 × 1,099.60
  4. Step 4: Simplify right side
    1,688.06x = 2,562,765.92
  5. Step 5: Solve for x
    x = 2,562,765.92/1,688.06
  6. Step 6: Final answer
    x = 1,518.17

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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.