Home / 1,986.32-2,740.52-1,146.92

Finding the Fourth Proportional to 1,986.32, 2,740.52 and 1,146.92

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Solution

The fourth proportional to 1,986.32, 2,740.52 and 1,146.92 is: 1,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.32 : 2,740.52 = 1,146.92 : x
  2. Step 2: Convert to fraction form
    1,986.32/2,740.52 = 1,146.92/x
  3. Step 3: Cross multiply
    1,986.32x = 2,740.52 × 1,146.92
  4. Step 4: Simplify right side
    1,986.32x = 3,143,157.20
  5. Step 5: Solve for x
    x = 3,143,157.20/1,986.32
  6. Step 6: Final answer
    x = 1,582.40

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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.