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Finding the Fourth Proportional to 7,656.80, 11,474.40 and 4,726.40

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Solution

The fourth proportional to 7,656.80, 11,474.40 and 4,726.40 is: 7,082.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,656.80 : 11,474.40 = 4,726.40 : x
  2. Step 2: Convert to fraction form
    7,656.80/11,474.40 = 4,726.40/x
  3. Step 3: Cross multiply
    7,656.80x = 11,474.40 × 4,726.40
  4. Step 4: Simplify right side
    7,656.80x = 54,232,604.16
  5. Step 5: Solve for x
    x = 54,232,604.16/7,656.80
  6. Step 6: Final answer
    x = 7,082.93

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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.