Home / 1,688.94-2,330.89-1,025.96

Finding the Fourth Proportional to 1,688.94, 2,330.89 and 1,025.96

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Solution

The fourth proportional to 1,688.94, 2,330.89 and 1,025.96 is: 1,415.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.94 : 2,330.89 = 1,025.96 : x
  2. Step 2: Convert to fraction form
    1,688.94/2,330.89 = 1,025.96/x
  3. Step 3: Cross multiply
    1,688.94x = 2,330.89 × 1,025.96
  4. Step 4: Simplify right side
    1,688.94x = 2,391,399.90
  5. Step 5: Solve for x
    x = 2,391,399.90/1,688.94
  6. Step 6: Final answer
    x = 1,415.92

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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.