Home / 6,445.95-8,889.60-4,428.42

Finding the Fourth Proportional to 6,445.95, 8,889.60 and 4,428.42

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Solution

The fourth proportional to 6,445.95, 8,889.60 and 4,428.42 is: 6,107.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.95 : 8,889.60 = 4,428.42 : x
  2. Step 2: Convert to fraction form
    6,445.95/8,889.60 = 4,428.42/x
  3. Step 3: Cross multiply
    6,445.95x = 8,889.60 × 4,428.42
  4. Step 4: Simplify right side
    6,445.95x = 39,366,882.43
  5. Step 5: Solve for x
    x = 39,366,882.43/6,445.95
  6. Step 6: Final answer
    x = 6,107.23

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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.