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Finding the Fourth Proportional to 4,672.40, 7,008.60 and 2,829.20

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Solution

The fourth proportional to 4,672.40, 7,008.60 and 2,829.20 is: 4,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,672.40 : 7,008.60 = 2,829.20 : x
  2. Step 2: Convert to fraction form
    4,672.40/7,008.60 = 2,829.20/x
  3. Step 3: Cross multiply
    4,672.40x = 7,008.60 × 2,829.20
  4. Step 4: Simplify right side
    4,672.40x = 19,828,731.12
  5. Step 5: Solve for x
    x = 19,828,731.12/4,672.40
  6. Step 6: Final answer
    x = 4,243.80

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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.