Home / 3,864.96-5,340.60-3,085.20

Finding the Fourth Proportional to 3,864.96, 5,340.60 and 3,085.20

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Solution

The fourth proportional to 3,864.96, 5,340.60 and 3,085.20 is: 4,263.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,864.96 : 5,340.60 = 3,085.20 : x
  2. Step 2: Convert to fraction form
    3,864.96/5,340.60 = 3,085.20/x
  3. Step 3: Cross multiply
    3,864.96x = 5,340.60 × 3,085.20
  4. Step 4: Simplify right side
    3,864.96x = 16,476,819.12
  5. Step 5: Solve for x
    x = 16,476,819.12/3,864.96
  6. Step 6: Final answer
    x = 4,263.13

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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.