Home / 1,510.90-2,263.44-1,121.82

Finding the Fourth Proportional to 1,510.90, 2,263.44 and 1,121.82

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Solution

The fourth proportional to 1,510.90, 2,263.44 and 1,121.82 is: 1,680.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.90 : 2,263.44 = 1,121.82 : x
  2. Step 2: Convert to fraction form
    1,510.90/2,263.44 = 1,121.82/x
  3. Step 3: Cross multiply
    1,510.90x = 2,263.44 × 1,121.82
  4. Step 4: Simplify right side
    1,510.90x = 2,539,172.26
  5. Step 5: Solve for x
    x = 2,539,172.26/1,510.90
  6. Step 6: Final answer
    x = 1,680.57

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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.