Home / 5,768.40-8,656.92-3,915.12

Finding the Fourth Proportional to 5,768.40, 8,656.92 and 3,915.12

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Solution

The fourth proportional to 5,768.40, 8,656.92 and 3,915.12 is: 5,875.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,768.40 : 8,656.92 = 3,915.12 : x
  2. Step 2: Convert to fraction form
    5,768.40/8,656.92 = 3,915.12/x
  3. Step 3: Cross multiply
    5,768.40x = 8,656.92 × 3,915.12
  4. Step 4: Simplify right side
    5,768.40x = 33,892,880.63
  5. Step 5: Solve for x
    x = 33,892,880.63/5,768.40
  6. Step 6: Final answer
    x = 5,875.61

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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.