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Finding the Fourth Proportional to 7,266.80, 10,900.20 and 2,648.72

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Solution

The fourth proportional to 7,266.80, 10,900.20 and 2,648.72 is: 3,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,266.80 : 10,900.20 = 2,648.72 : x
  2. Step 2: Convert to fraction form
    7,266.80/10,900.20 = 2,648.72/x
  3. Step 3: Cross multiply
    7,266.80x = 10,900.20 × 2,648.72
  4. Step 4: Simplify right side
    7,266.80x = 28,871,577.74
  5. Step 5: Solve for x
    x = 28,871,577.74/7,266.80
  6. Step 6: Final answer
    x = 3,973.08

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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.