Home / 2,577.60-3,557.07-1,398.64

Finding the Fourth Proportional to 2,577.60, 3,557.07 and 1,398.64

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Solution

The fourth proportional to 2,577.60, 3,557.07 and 1,398.64 is: 1,930.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.60 : 3,557.07 = 1,398.64 : x
  2. Step 2: Convert to fraction form
    2,577.60/3,557.07 = 1,398.64/x
  3. Step 3: Cross multiply
    2,577.60x = 3,557.07 × 1,398.64
  4. Step 4: Simplify right side
    2,577.60x = 4,975,060.38
  5. Step 5: Solve for x
    x = 4,975,060.38/2,577.60
  6. Step 6: Final answer
    x = 1,930.11

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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.