Home / 3,929.18-5,419.98-2,356.35

Finding the Fourth Proportional to 3,929.18, 5,419.98 and 2,356.35

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Solution

The fourth proportional to 3,929.18, 5,419.98 and 2,356.35 is: 3,250.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.18 : 5,419.98 = 2,356.35 : x
  2. Step 2: Convert to fraction form
    3,929.18/5,419.98 = 2,356.35/x
  3. Step 3: Cross multiply
    3,929.18x = 5,419.98 × 2,356.35
  4. Step 4: Simplify right side
    3,929.18x = 12,771,369.87
  5. Step 5: Solve for x
    x = 12,771,369.87/3,929.18
  6. Step 6: Final answer
    x = 3,250.39

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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.