Home / 5,125.56-7,688.34-1,427.80

Finding the Fourth Proportional to 5,125.56, 7,688.34 and 1,427.80

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Solution

The fourth proportional to 5,125.56, 7,688.34 and 1,427.80 is: 2,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.56 : 7,688.34 = 1,427.80 : x
  2. Step 2: Convert to fraction form
    5,125.56/7,688.34 = 1,427.80/x
  3. Step 3: Cross multiply
    5,125.56x = 7,688.34 × 1,427.80
  4. Step 4: Simplify right side
    5,125.56x = 10,977,411.85
  5. Step 5: Solve for x
    x = 10,977,411.85/5,125.56
  6. Step 6: Final answer
    x = 2,141.70

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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.