Home / 5,124.05-7,685.62-1,426.20

Finding the Fourth Proportional to 5,124.05, 7,685.62 and 1,426.20

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Solution

The fourth proportional to 5,124.05, 7,685.62 and 1,426.20 is: 2,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.05 : 7,685.62 = 1,426.20 : x
  2. Step 2: Convert to fraction form
    5,124.05/7,685.62 = 1,426.20/x
  3. Step 3: Cross multiply
    5,124.05x = 7,685.62 × 1,426.20
  4. Step 4: Simplify right side
    5,124.05x = 10,961,231.24
  5. Step 5: Solve for x
    x = 10,961,231.24/5,124.05
  6. Step 6: Final answer
    x = 2,139.17

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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.