Home / 1,577.22-2,176.40-914.29

Finding the Fourth Proportional to 1,577.22, 2,176.40 and 914.29

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Solution

The fourth proportional to 1,577.22, 2,176.40 and 914.29 is: 1,261.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.22 : 2,176.40 = 914.29 : x
  2. Step 2: Convert to fraction form
    1,577.22/2,176.40 = 914.29/x
  3. Step 3: Cross multiply
    1,577.22x = 2,176.40 × 914.29
  4. Step 4: Simplify right side
    1,577.22x = 1,989,857.60
  5. Step 5: Solve for x
    x = 1,989,857.60/1,577.22
  6. Step 6: Final answer
    x = 1,261.63

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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.