Home / 1,573.80-2,172.29-1,261.24

Finding the Fourth Proportional to 1,573.80, 2,172.29 and 1,261.24

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Solution

The fourth proportional to 1,573.80, 2,172.29 and 1,261.24 is: 1,740.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.80 : 2,172.29 = 1,261.24 : x
  2. Step 2: Convert to fraction form
    1,573.80/2,172.29 = 1,261.24/x
  3. Step 3: Cross multiply
    1,573.80x = 2,172.29 × 1,261.24
  4. Step 4: Simplify right side
    1,573.80x = 2,739,767.30
  5. Step 5: Solve for x
    x = 2,739,767.30/1,573.80
  6. Step 6: Final answer
    x = 1,740.87

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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.