Home / 2,891.07-3,989.61-1,712.16

Finding the Fourth Proportional to 2,891.07, 3,989.61 and 1,712.16

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Solution

The fourth proportional to 2,891.07, 3,989.61 and 1,712.16 is: 2,362.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.07 : 3,989.61 = 1,712.16 : x
  2. Step 2: Convert to fraction form
    2,891.07/3,989.61 = 1,712.16/x
  3. Step 3: Cross multiply
    2,891.07x = 3,989.61 × 1,712.16
  4. Step 4: Simplify right side
    2,891.07x = 6,830,850.66
  5. Step 5: Solve for x
    x = 6,830,850.66/2,891.07
  6. Step 6: Final answer
    x = 2,362.74

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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.