Home / 3,928.18-5,421.12-2,599.56

Finding the Fourth Proportional to 3,928.18, 5,421.12 and 2,599.56

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Solution

The fourth proportional to 3,928.18, 5,421.12 and 2,599.56 is: 3,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.18 : 5,421.12 = 2,599.56 : x
  2. Step 2: Convert to fraction form
    3,928.18/5,421.12 = 2,599.56/x
  3. Step 3: Cross multiply
    3,928.18x = 5,421.12 × 2,599.56
  4. Step 4: Simplify right side
    3,928.18x = 14,092,526.71
  5. Step 5: Solve for x
    x = 14,092,526.71/3,928.18
  6. Step 6: Final answer
    x = 3,587.55

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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.