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Finding the Fourth Proportional to 7,903.56, 10,909.06 and 4,676.20

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Solution

The fourth proportional to 7,903.56, 10,909.06 and 4,676.20 is: 6,454.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.56 : 10,909.06 = 4,676.20 : x
  2. Step 2: Convert to fraction form
    7,903.56/10,909.06 = 4,676.20/x
  3. Step 3: Cross multiply
    7,903.56x = 10,909.06 × 4,676.20
  4. Step 4: Simplify right side
    7,903.56x = 51,012,946.37
  5. Step 5: Solve for x
    x = 51,012,946.37/7,903.56
  6. Step 6: Final answer
    x = 6,454.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.