Home / 5,129.64-7,079.94-4,008.36

Finding the Fourth Proportional to 5,129.64, 7,079.94 and 4,008.36

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Solution

The fourth proportional to 5,129.64, 7,079.94 and 4,008.36 is: 5,532.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.64 : 7,079.94 = 4,008.36 : x
  2. Step 2: Convert to fraction form
    5,129.64/7,079.94 = 4,008.36/x
  3. Step 3: Cross multiply
    5,129.64x = 7,079.94 × 4,008.36
  4. Step 4: Simplify right side
    5,129.64x = 28,378,948.30
  5. Step 5: Solve for x
    x = 28,378,948.30/5,129.64
  6. Step 6: Final answer
    x = 5,532.35

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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.