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Finding the Fourth Proportional to 5,130.58, 7,080.58 and 3,869.42

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Solution

The fourth proportional to 5,130.58, 7,080.58 and 3,869.42 is: 5,340.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.58 : 7,080.58 = 3,869.42 : x
  2. Step 2: Convert to fraction form
    5,130.58/7,080.58 = 3,869.42/x
  3. Step 3: Cross multiply
    5,130.58x = 7,080.58 × 3,869.42
  4. Step 4: Simplify right side
    5,130.58x = 27,397,737.86
  5. Step 5: Solve for x
    x = 27,397,737.86/5,130.58
  6. Step 6: Final answer
    x = 5,340.09

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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.