Home / 8,915.14-12,305.56-5,771.54

Finding the Fourth Proportional to 8,915.14, 12,305.56 and 5,771.54

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Solution

The fourth proportional to 8,915.14, 12,305.56 and 5,771.54 is: 7,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.14 : 12,305.56 = 5,771.54 : x
  2. Step 2: Convert to fraction form
    8,915.14/12,305.56 = 5,771.54/x
  3. Step 3: Cross multiply
    8,915.14x = 12,305.56 × 5,771.54
  4. Step 4: Simplify right side
    8,915.14x = 71,022,031.76
  5. Step 5: Solve for x
    x = 71,022,031.76/8,915.14
  6. Step 6: Final answer
    x = 7,966.45

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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.