Home / 5,428.51-8,156.44-3,455.05

Finding the Fourth Proportional to 5,428.51, 8,156.44 and 3,455.05

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Solution

The fourth proportional to 5,428.51, 8,156.44 and 3,455.05 is: 5,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.51 : 8,156.44 = 3,455.05 : x
  2. Step 2: Convert to fraction form
    5,428.51/8,156.44 = 3,455.05/x
  3. Step 3: Cross multiply
    5,428.51x = 8,156.44 × 3,455.05
  4. Step 4: Simplify right side
    5,428.51x = 28,180,889.19
  5. Step 5: Solve for x
    x = 28,180,889.19/5,428.51
  6. Step 6: Final answer
    x = 5,191.27

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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.