Home / 2,831.64-3,908.48-1,888.80

Finding the Fourth Proportional to 2,831.64, 3,908.48 and 1,888.80

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Solution

The fourth proportional to 2,831.64, 3,908.48 and 1,888.80 is: 2,607.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.64 : 3,908.48 = 1,888.80 : x
  2. Step 2: Convert to fraction form
    2,831.64/3,908.48 = 1,888.80/x
  3. Step 3: Cross multiply
    2,831.64x = 3,908.48 × 1,888.80
  4. Step 4: Simplify right side
    2,831.64x = 7,382,337.02
  5. Step 5: Solve for x
    x = 7,382,337.02/2,831.64
  6. Step 6: Final answer
    x = 2,607.09

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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.