Home / 5,125.78-7,688.67-1,230.19

Finding the Fourth Proportional to 5,125.78, 7,688.67 and 1,230.19

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Solution

The fourth proportional to 5,125.78, 7,688.67 and 1,230.19 is: 1,845.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.78 : 7,688.67 = 1,230.19 : x
  2. Step 2: Convert to fraction form
    5,125.78/7,688.67 = 1,230.19/x
  3. Step 3: Cross multiply
    5,125.78x = 7,688.67 × 1,230.19
  4. Step 4: Simplify right side
    5,125.78x = 9,458,508.03
  5. Step 5: Solve for x
    x = 9,458,508.03/5,125.78
  6. Step 6: Final answer
    x = 1,845.28

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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.