Home / 5,125.65-7,688.48-1,427.88

Finding the Fourth Proportional to 5,125.65, 7,688.48 and 1,427.88

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Solution

The fourth proportional to 5,125.65, 7,688.48 and 1,427.88 is: 2,141.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.65 : 7,688.48 = 1,427.88 : x
  2. Step 2: Convert to fraction form
    5,125.65/7,688.48 = 1,427.88/x
  3. Step 3: Cross multiply
    5,125.65x = 7,688.48 × 1,427.88
  4. Step 4: Simplify right side
    5,125.65x = 10,978,226.82
  5. Step 5: Solve for x
    x = 10,978,226.82/5,125.65
  6. Step 6: Final answer
    x = 2,141.82

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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.