Home / 3,178.10-4,767.60-1,230.50

Finding the Fourth Proportional to 3,178.10, 4,767.60 and 1,230.50

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Solution

The fourth proportional to 3,178.10, 4,767.60 and 1,230.50 is: 1,845.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.10 : 4,767.60 = 1,230.50 : x
  2. Step 2: Convert to fraction form
    3,178.10/4,767.60 = 1,230.50/x
  3. Step 3: Cross multiply
    3,178.10x = 4,767.60 × 1,230.50
  4. Step 4: Simplify right side
    3,178.10x = 5,866,531.80
  5. Step 5: Solve for x
    x = 5,866,531.80/3,178.10
  6. Step 6: Final answer
    x = 1,845.92

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Double scale
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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.