Home / 2,151.80-2,968.23-1,553.63

Finding the Fourth Proportional to 2,151.80, 2,968.23 and 1,553.63

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Solution

The fourth proportional to 2,151.80, 2,968.23 and 1,553.63 is: 2,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.80 : 2,968.23 = 1,553.63 : x
  2. Step 2: Convert to fraction form
    2,151.80/2,968.23 = 1,553.63/x
  3. Step 3: Cross multiply
    2,151.80x = 2,968.23 × 1,553.63
  4. Step 4: Simplify right side
    2,151.80x = 4,611,516.33
  5. Step 5: Solve for x
    x = 4,611,516.33/2,151.80
  6. Step 6: Final answer
    x = 2,143.10

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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.