Home / 6,105-8,423.40-3,587.20

Finding the Fourth Proportional to 6,105, 8,423.40 and 3,587.20

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Solution

The fourth proportional to 6,105, 8,423.40 and 3,587.20 is: 4,949.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,105 : 8,423.40 = 3,587.20 : x
  2. Step 2: Convert to fraction form
    6,105/8,423.40 = 3,587.20/x
  3. Step 3: Cross multiply
    6,105x = 8,423.40 × 3,587.20
  4. Step 4: Simplify right side
    6,105x = 30,216,420.48
  5. Step 5: Solve for x
    x = 30,216,420.48/6,105
  6. Step 6: Final answer
    x = 4,949.45

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Double scale
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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.