Home / 2,636.74-3,638.70-1,457.80

Finding the Fourth Proportional to 2,636.74, 3,638.70 and 1,457.80

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Solution

The fourth proportional to 2,636.74, 3,638.70 and 1,457.80 is: 2,011.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636.74 : 3,638.70 = 1,457.80 : x
  2. Step 2: Convert to fraction form
    2,636.74/3,638.70 = 1,457.80/x
  3. Step 3: Cross multiply
    2,636.74x = 3,638.70 × 1,457.80
  4. Step 4: Simplify right side
    2,636.74x = 5,304,496.86
  5. Step 5: Solve for x
    x = 5,304,496.86/2,636.74
  6. Step 6: Final answer
    x = 2,011.76

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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.