Home / 1,638.95-2,458.82-1,457.71

Finding the Fourth Proportional to 1,638.95, 2,458.82 and 1,457.71

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Solution

The fourth proportional to 1,638.95, 2,458.82 and 1,457.71 is: 2,186.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.95 : 2,458.82 = 1,457.71 : x
  2. Step 2: Convert to fraction form
    1,638.95/2,458.82 = 1,457.71/x
  3. Step 3: Cross multiply
    1,638.95x = 2,458.82 × 1,457.71
  4. Step 4: Simplify right side
    1,638.95x = 3,584,244.00
  5. Step 5: Solve for x
    x = 3,584,244.00/1,638.95
  6. Step 6: Final answer
    x = 2,186.92

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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.