Home / 1,689.77-2,331.69-1,026.38

Finding the Fourth Proportional to 1,689.77, 2,331.69 and 1,026.38

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Solution

The fourth proportional to 1,689.77, 2,331.69 and 1,026.38 is: 1,416.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.77 : 2,331.69 = 1,026.38 : x
  2. Step 2: Convert to fraction form
    1,689.77/2,331.69 = 1,026.38/x
  3. Step 3: Cross multiply
    1,689.77x = 2,331.69 × 1,026.38
  4. Step 4: Simplify right side
    1,689.77x = 2,393,188.32
  5. Step 5: Solve for x
    x = 2,393,188.32/1,689.77
  6. Step 6: Final answer
    x = 1,416.28

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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.