Home / 1,625.90-2,438.78-1,316.12

Finding the Fourth Proportional to 1,625.90, 2,438.78 and 1,316.12

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Solution

The fourth proportional to 1,625.90, 2,438.78 and 1,316.12 is: 1,974.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.90 : 2,438.78 = 1,316.12 : x
  2. Step 2: Convert to fraction form
    1,625.90/2,438.78 = 1,316.12/x
  3. Step 3: Cross multiply
    1,625.90x = 2,438.78 × 1,316.12
  4. Step 4: Simplify right side
    1,625.90x = 3,209,727.13
  5. Step 5: Solve for x
    x = 3,209,727.13/1,625.90
  6. Step 6: Final answer
    x = 1,974.12

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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.