Home / 3,445.29-5,186.69-3,139.11

Finding the Fourth Proportional to 3,445.29, 5,186.69 and 3,139.11

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Solution

The fourth proportional to 3,445.29, 5,186.69 and 3,139.11 is: 4,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.29 : 5,186.69 = 3,139.11 : x
  2. Step 2: Convert to fraction form
    3,445.29/5,186.69 = 3,139.11/x
  3. Step 3: Cross multiply
    3,445.29x = 5,186.69 × 3,139.11
  4. Step 4: Simplify right side
    3,445.29x = 16,281,590.45
  5. Step 5: Solve for x
    x = 16,281,590.45/3,445.29
  6. Step 6: Final answer
    x = 4,725.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.