Home / 4,308.90-6,455.10-2,915.40

Finding the Fourth Proportional to 4,308.90, 6,455.10 and 2,915.40

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Solution

The fourth proportional to 4,308.90, 6,455.10 and 2,915.40 is: 4,367.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,308.90 : 6,455.10 = 2,915.40 : x
  2. Step 2: Convert to fraction form
    4,308.90/6,455.10 = 2,915.40/x
  3. Step 3: Cross multiply
    4,308.90x = 6,455.10 × 2,915.40
  4. Step 4: Simplify right side
    4,308.90x = 18,819,198.54
  5. Step 5: Solve for x
    x = 18,819,198.54/4,308.90
  6. Step 6: Final answer
    x = 4,367.52

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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.