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Finding the Fourth Proportional to 5,256.86, 7,885.30 and 2,915.76

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Solution

The fourth proportional to 5,256.86, 7,885.30 and 2,915.76 is: 4,373.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,256.86 : 7,885.30 = 2,915.76 : x
  2. Step 2: Convert to fraction form
    5,256.86/7,885.30 = 2,915.76/x
  3. Step 3: Cross multiply
    5,256.86x = 7,885.30 × 2,915.76
  4. Step 4: Simplify right side
    5,256.86x = 22,991,642.33
  5. Step 5: Solve for x
    x = 22,991,642.33/5,256.86
  6. Step 6: Final answer
    x = 4,373.65

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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.