Home / 5,122.17-7,688.52-2,656.33

Finding the Fourth Proportional to 5,122.17, 7,688.52 and 2,656.33

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Solution

The fourth proportional to 5,122.17, 7,688.52 and 2,656.33 is: 3,987.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.17 : 7,688.52 = 2,656.33 : x
  2. Step 2: Convert to fraction form
    5,122.17/7,688.52 = 2,656.33/x
  3. Step 3: Cross multiply
    5,122.17x = 7,688.52 × 2,656.33
  4. Step 4: Simplify right side
    5,122.17x = 20,423,227.11
  5. Step 5: Solve for x
    x = 20,423,227.11/5,122.17
  6. Step 6: Final answer
    x = 3,987.22

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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.