Home / 5,124.57-7,686.90-1,427.10

Finding the Fourth Proportional to 5,124.57, 7,686.90 and 1,427.10

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Solution

The fourth proportional to 5,124.57, 7,686.90 and 1,427.10 is: 2,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.57 : 7,686.90 = 1,427.10 : x
  2. Step 2: Convert to fraction form
    5,124.57/7,686.90 = 1,427.10/x
  3. Step 3: Cross multiply
    5,124.57x = 7,686.90 × 1,427.10
  4. Step 4: Simplify right side
    5,124.57x = 10,969,974.99
  5. Step 5: Solve for x
    x = 10,969,974.99/5,124.57
  6. Step 6: Final answer
    x = 2,140.66

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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.