Home / 5,122.05-7,064.64-3,130.98

Finding the Fourth Proportional to 5,122.05, 7,064.64 and 3,130.98

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Solution

The fourth proportional to 5,122.05, 7,064.64 and 3,130.98 is: 4,318.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.05 : 7,064.64 = 3,130.98 : x
  2. Step 2: Convert to fraction form
    5,122.05/7,064.64 = 3,130.98/x
  3. Step 3: Cross multiply
    5,122.05x = 7,064.64 × 3,130.98
  4. Step 4: Simplify right side
    5,122.05x = 22,119,246.55
  5. Step 5: Solve for x
    x = 22,119,246.55/5,122.05
  6. Step 6: Final answer
    x = 4,318.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.