Home / 5,316.57-7,974.90-1,420.92

Finding the Fourth Proportional to 5,316.57, 7,974.90 and 1,420.92

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Solution

The fourth proportional to 5,316.57, 7,974.90 and 1,420.92 is: 2,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.57 : 7,974.90 = 1,420.92 : x
  2. Step 2: Convert to fraction form
    5,316.57/7,974.90 = 1,420.92/x
  3. Step 3: Cross multiply
    5,316.57x = 7,974.90 × 1,420.92
  4. Step 4: Simplify right side
    5,316.57x = 11,331,694.91
  5. Step 5: Solve for x
    x = 11,331,694.91/5,316.57
  6. Step 6: Final answer
    x = 2,131.39

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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.