Home / 5,641.23-8,462.57-2,178.75

Finding the Fourth Proportional to 5,641.23, 8,462.57 and 2,178.75

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Solution

The fourth proportional to 5,641.23, 8,462.57 and 2,178.75 is: 3,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.23 : 8,462.57 = 2,178.75 : x
  2. Step 2: Convert to fraction form
    5,641.23/8,462.57 = 2,178.75/x
  3. Step 3: Cross multiply
    5,641.23x = 8,462.57 × 2,178.75
  4. Step 4: Simplify right side
    5,641.23x = 18,437,813.49
  5. Step 5: Solve for x
    x = 18,437,813.49/5,641.23
  6. Step 6: Final answer
    x = 3,268.40

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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.