Home / 2,904.16-4,009.20-2,117.92

Finding the Fourth Proportional to 2,904.16, 4,009.20 and 2,117.92

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Solution

The fourth proportional to 2,904.16, 4,009.20 and 2,117.92 is: 2,923.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,904.16 : 4,009.20 = 2,117.92 : x
  2. Step 2: Convert to fraction form
    2,904.16/4,009.20 = 2,117.92/x
  3. Step 3: Cross multiply
    2,904.16x = 4,009.20 × 2,117.92
  4. Step 4: Simplify right side
    2,904.16x = 8,491,164.86
  5. Step 5: Solve for x
    x = 8,491,164.86/2,904.16
  6. Step 6: Final answer
    x = 2,923.79

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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.