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Finding the Fourth Proportional to 4,807.68, 7,211.52 and 1,729.60

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Solution

The fourth proportional to 4,807.68, 7,211.52 and 1,729.60 is: 2,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,807.68 : 7,211.52 = 1,729.60 : x
  2. Step 2: Convert to fraction form
    4,807.68/7,211.52 = 1,729.60/x
  3. Step 3: Cross multiply
    4,807.68x = 7,211.52 × 1,729.60
  4. Step 4: Simplify right side
    4,807.68x = 12,473,044.99
  5. Step 5: Solve for x
    x = 12,473,044.99/4,807.68
  6. Step 6: Final answer
    x = 2,594.40

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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.