Home / 2,577.65-3,557.16-1,398.72

Finding the Fourth Proportional to 2,577.65, 3,557.16 and 1,398.72

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Solution

The fourth proportional to 2,577.65, 3,557.16 and 1,398.72 is: 1,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.65 : 3,557.16 = 1,398.72 : x
  2. Step 2: Convert to fraction form
    2,577.65/3,557.16 = 1,398.72/x
  3. Step 3: Cross multiply
    2,577.65x = 3,557.16 × 1,398.72
  4. Step 4: Simplify right side
    2,577.65x = 4,975,470.84
  5. Step 5: Solve for x
    x = 4,975,470.84/2,577.65
  6. Step 6: Final answer
    x = 1,930.24

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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.