Home / 4,485.65-6,728.47-2,145.10

Finding the Fourth Proportional to 4,485.65, 6,728.47 and 2,145.10

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Solution

The fourth proportional to 4,485.65, 6,728.47 and 2,145.10 is: 3,217.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.65 : 6,728.47 = 2,145.10 : x
  2. Step 2: Convert to fraction form
    4,485.65/6,728.47 = 2,145.10/x
  3. Step 3: Cross multiply
    4,485.65x = 6,728.47 × 2,145.10
  4. Step 4: Simplify right side
    4,485.65x = 14,433,218.81
  5. Step 5: Solve for x
    x = 14,433,218.81/4,485.65
  6. Step 6: Final answer
    x = 3,217.65

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.