Home / 6,442.40-8,889.89-4,427.58

Finding the Fourth Proportional to 6,442.40, 8,889.89 and 4,427.58

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Solution

The fourth proportional to 6,442.40, 8,889.89 and 4,427.58 is: 6,109.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,442.40 : 8,889.89 = 4,427.58 : x
  2. Step 2: Convert to fraction form
    6,442.40/8,889.89 = 4,427.58/x
  3. Step 3: Cross multiply
    6,442.40x = 8,889.89 × 4,427.58
  4. Step 4: Simplify right side
    6,442.40x = 39,360,685.26
  5. Step 5: Solve for x
    x = 39,360,685.26/6,442.40
  6. Step 6: Final answer
    x = 6,109.63

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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.