Home / 5,156.53-7,115.31-3,030.80

Finding the Fourth Proportional to 5,156.53, 7,115.31 and 3,030.80

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Solution

The fourth proportional to 5,156.53, 7,115.31 and 3,030.80 is: 4,182.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.53 : 7,115.31 = 3,030.80 : x
  2. Step 2: Convert to fraction form
    5,156.53/7,115.31 = 3,030.80/x
  3. Step 3: Cross multiply
    5,156.53x = 7,115.31 × 3,030.80
  4. Step 4: Simplify right side
    5,156.53x = 21,565,086.00
  5. Step 5: Solve for x
    x = 21,565,086.00/5,156.53
  6. Step 6: Final answer
    x = 4,182.09

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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.