Home / 3,638.36-5,457.54-1,689.50

Finding the Fourth Proportional to 3,638.36, 5,457.54 and 1,689.50

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Solution

The fourth proportional to 3,638.36, 5,457.54 and 1,689.50 is: 2,534.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.36 : 5,457.54 = 1,689.50 : x
  2. Step 2: Convert to fraction form
    3,638.36/5,457.54 = 1,689.50/x
  3. Step 3: Cross multiply
    3,638.36x = 5,457.54 × 1,689.50
  4. Step 4: Simplify right side
    3,638.36x = 9,220,513.83
  5. Step 5: Solve for x
    x = 9,220,513.83/3,638.36
  6. Step 6: Final answer
    x = 2,534.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.