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Finding the Fourth Proportional to 3,256.68, 4,885.50 and 947.88

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Solution

The fourth proportional to 3,256.68, 4,885.50 and 947.88 is: 1,421.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,256.68 : 4,885.50 = 947.88 : x
  2. Step 2: Convert to fraction form
    3,256.68/4,885.50 = 947.88/x
  3. Step 3: Cross multiply
    3,256.68x = 4,885.50 × 947.88
  4. Step 4: Simplify right side
    3,256.68x = 4,630,867.74
  5. Step 5: Solve for x
    x = 4,630,867.74/3,256.68
  6. Step 6: Final answer
    x = 1,421.96

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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.