Home / 2,776.64-3,831.90-1,729.04

Finding the Fourth Proportional to 2,776.64, 3,831.90 and 1,729.04

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Solution

The fourth proportional to 2,776.64, 3,831.90 and 1,729.04 is: 2,386.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.64 : 3,831.90 = 1,729.04 : x
  2. Step 2: Convert to fraction form
    2,776.64/3,831.90 = 1,729.04/x
  3. Step 3: Cross multiply
    2,776.64x = 3,831.90 × 1,729.04
  4. Step 4: Simplify right side
    2,776.64x = 6,625,508.38
  5. Step 5: Solve for x
    x = 6,625,508.38/2,776.64
  6. Step 6: Final answer
    x = 2,386.16

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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.