Home / 3,929.55-5,421.43-2,436.93

Finding the Fourth Proportional to 3,929.55, 5,421.43 and 2,436.93

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Solution

The fourth proportional to 3,929.55, 5,421.43 and 2,436.93 is: 3,362.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.55 : 5,421.43 = 2,436.93 : x
  2. Step 2: Convert to fraction form
    3,929.55/5,421.43 = 2,436.93/x
  3. Step 3: Cross multiply
    3,929.55x = 5,421.43 × 2,436.93
  4. Step 4: Simplify right side
    3,929.55x = 13,211,645.41
  5. Step 5: Solve for x
    x = 13,211,645.41/3,929.55
  6. Step 6: Final answer
    x = 3,362.13

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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.