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Finding the Fourth Proportional to 5,308.76, 7,941.04 and 4,915.12

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Solution

The fourth proportional to 5,308.76, 7,941.04 and 4,915.12 is: 7,352.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.76 : 7,941.04 = 4,915.12 : x
  2. Step 2: Convert to fraction form
    5,308.76/7,941.04 = 4,915.12/x
  3. Step 3: Cross multiply
    5,308.76x = 7,941.04 × 4,915.12
  4. Step 4: Simplify right side
    5,308.76x = 39,031,164.52
  5. Step 5: Solve for x
    x = 39,031,164.52/5,308.76
  6. Step 6: Final answer
    x = 7,352.22

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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.