Home / 2,051.90-2,831.58-1,120.40

Finding the Fourth Proportional to 2,051.90, 2,831.58 and 1,120.40

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Solution

The fourth proportional to 2,051.90, 2,831.58 and 1,120.40 is: 1,546.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,051.90 : 2,831.58 = 1,120.40 : x
  2. Step 2: Convert to fraction form
    2,051.90/2,831.58 = 1,120.40/x
  3. Step 3: Cross multiply
    2,051.90x = 2,831.58 × 1,120.40
  4. Step 4: Simplify right side
    2,051.90x = 3,172,502.23
  5. Step 5: Solve for x
    x = 3,172,502.23/2,051.90
  6. Step 6: Final answer
    x = 1,546.13

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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.