Home / 1,689.18-2,331.36-1,246.52

Finding the Fourth Proportional to 1,689.18, 2,331.36 and 1,246.52

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Solution

The fourth proportional to 1,689.18, 2,331.36 and 1,246.52 is: 1,720.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.18 : 2,331.36 = 1,246.52 : x
  2. Step 2: Convert to fraction form
    1,689.18/2,331.36 = 1,246.52/x
  3. Step 3: Cross multiply
    1,689.18x = 2,331.36 × 1,246.52
  4. Step 4: Simplify right side
    1,689.18x = 2,906,075.21
  5. Step 5: Solve for x
    x = 2,906,075.21/1,689.18
  6. Step 6: Final answer
    x = 1,720.41

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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.