Home / 2,577.80-3,557.37-1,398.86

Finding the Fourth Proportional to 2,577.80, 3,557.37 and 1,398.86

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Solution

The fourth proportional to 2,577.80, 3,557.37 and 1,398.86 is: 1,930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.80 : 3,557.37 = 1,398.86 : x
  2. Step 2: Convert to fraction form
    2,577.80/3,557.37 = 1,398.86/x
  3. Step 3: Cross multiply
    2,577.80x = 3,557.37 × 1,398.86
  4. Step 4: Simplify right side
    2,577.80x = 4,976,244.81
  5. Step 5: Solve for x
    x = 4,976,244.81/2,577.80
  6. Step 6: Final answer
    x = 1,930.43

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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.