Home / 5,427.14-8,140.10-1,916.40

Finding the Fourth Proportional to 5,427.14, 8,140.10 and 1,916.40

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Solution

The fourth proportional to 5,427.14, 8,140.10 and 1,916.40 is: 2,874.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.14 : 8,140.10 = 1,916.40 : x
  2. Step 2: Convert to fraction form
    5,427.14/8,140.10 = 1,916.40/x
  3. Step 3: Cross multiply
    5,427.14x = 8,140.10 × 1,916.40
  4. Step 4: Simplify right side
    5,427.14x = 15,599,678.06
  5. Step 5: Solve for x
    x = 15,599,678.06/5,427.14
  6. Step 6: Final answer
    x = 2,874.39

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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.