Home / 1,611.75-2,224.26-913.17

Finding the Fourth Proportional to 1,611.75, 2,224.26 and 913.17

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Solution

The fourth proportional to 1,611.75, 2,224.26 and 913.17 is: 1,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.75 : 2,224.26 = 913.17 : x
  2. Step 2: Convert to fraction form
    1,611.75/2,224.26 = 913.17/x
  3. Step 3: Cross multiply
    1,611.75x = 2,224.26 × 913.17
  4. Step 4: Simplify right side
    1,611.75x = 2,031,127.50
  5. Step 5: Solve for x
    x = 2,031,127.50/1,611.75
  6. Step 6: Final answer
    x = 1,260.20

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1.5x scale

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.