Home / 1,688.77-2,331.24-1,025.83

Finding the Fourth Proportional to 1,688.77, 2,331.24 and 1,025.83

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Solution

The fourth proportional to 1,688.77, 2,331.24 and 1,025.83 is: 1,416.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.77 : 2,331.24 = 1,025.83 : x
  2. Step 2: Convert to fraction form
    1,688.77/2,331.24 = 1,025.83/x
  3. Step 3: Cross multiply
    1,688.77x = 2,331.24 × 1,025.83
  4. Step 4: Simplify right side
    1,688.77x = 2,391,455.93
  5. Step 5: Solve for x
    x = 2,391,455.93/1,688.77
  6. Step 6: Final answer
    x = 1,416.09

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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.