Home / 2,127.12-2,932.92-1,971.60

Finding the Fourth Proportional to 2,127.12, 2,932.92 and 1,971.60

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Solution

The fourth proportional to 2,127.12, 2,932.92 and 1,971.60 is: 2,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.12 : 2,932.92 = 1,971.60 : x
  2. Step 2: Convert to fraction form
    2,127.12/2,932.92 = 1,971.60/x
  3. Step 3: Cross multiply
    2,127.12x = 2,932.92 × 1,971.60
  4. Step 4: Simplify right side
    2,127.12x = 5,782,545.07
  5. Step 5: Solve for x
    x = 5,782,545.07/2,127.12
  6. Step 6: Final answer
    x = 2,718.49

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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.