Home / 3,931.40-5,425.69-2,253.35

Finding the Fourth Proportional to 3,931.40, 5,425.69 and 2,253.35

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Solution

The fourth proportional to 3,931.40, 5,425.69 and 2,253.35 is: 3,109.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.40 : 5,425.69 = 2,253.35 : x
  2. Step 2: Convert to fraction form
    3,931.40/5,425.69 = 2,253.35/x
  3. Step 3: Cross multiply
    3,931.40x = 5,425.69 × 2,253.35
  4. Step 4: Simplify right side
    3,931.40x = 12,225,986.49
  5. Step 5: Solve for x
    x = 12,225,986.49/3,931.40
  6. Step 6: Final answer
    x = 3,109.83

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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.