Home / 2,639.16-3,643.18-1,577.28

Finding the Fourth Proportional to 2,639.16, 3,643.18 and 1,577.28

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Solution

The fourth proportional to 2,639.16, 3,643.18 and 1,577.28 is: 2,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.16 : 3,643.18 = 1,577.28 : x
  2. Step 2: Convert to fraction form
    2,639.16/3,643.18 = 1,577.28/x
  3. Step 3: Cross multiply
    2,639.16x = 3,643.18 × 1,577.28
  4. Step 4: Simplify right side
    2,639.16x = 5,746,314.95
  5. Step 5: Solve for x
    x = 5,746,314.95/2,639.16
  6. Step 6: Final answer
    x = 2,177.33

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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.