Home / 8,428.16-11,625.85-5,445.75

Finding the Fourth Proportional to 8,428.16, 11,625.85 and 5,445.75

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Solution

The fourth proportional to 8,428.16, 11,625.85 and 5,445.75 is: 7,511.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.16 : 11,625.85 = 5,445.75 : x
  2. Step 2: Convert to fraction form
    8,428.16/11,625.85 = 5,445.75/x
  3. Step 3: Cross multiply
    8,428.16x = 11,625.85 × 5,445.75
  4. Step 4: Simplify right side
    8,428.16x = 63,311,459.02
  5. Step 5: Solve for x
    x = 63,311,459.02/8,428.16
  6. Step 6: Final answer
    x = 7,511.89

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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.