Home / 3,945.59-5,916.99-1,312.38

Finding the Fourth Proportional to 3,945.59, 5,916.99 and 1,312.38

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Solution

The fourth proportional to 3,945.59, 5,916.99 and 1,312.38 is: 1,968.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.59 : 5,916.99 = 1,312.38 : x
  2. Step 2: Convert to fraction form
    3,945.59/5,916.99 = 1,312.38/x
  3. Step 3: Cross multiply
    3,945.59x = 5,916.99 × 1,312.38
  4. Step 4: Simplify right side
    3,945.59x = 7,765,339.34
  5. Step 5: Solve for x
    x = 7,765,339.34/3,945.59
  6. Step 6: Final answer
    x = 1,968.11

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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.