Home / 3,931.86-5,426.40-2,253.36

Finding the Fourth Proportional to 3,931.86, 5,426.40 and 2,253.36

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Solution

The fourth proportional to 3,931.86, 5,426.40 and 2,253.36 is: 3,109.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.86 : 5,426.40 = 2,253.36 : x
  2. Step 2: Convert to fraction form
    3,931.86/5,426.40 = 2,253.36/x
  3. Step 3: Cross multiply
    3,931.86x = 5,426.40 × 2,253.36
  4. Step 4: Simplify right side
    3,931.86x = 12,227,632.70
  5. Step 5: Solve for x
    x = 12,227,632.70/3,931.86
  6. Step 6: Final answer
    x = 3,109.89

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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.