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Finding the Fourth Proportional to 7,795.30, 10,759.80 and 5,438.20

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Solution

The fourth proportional to 7,795.30, 10,759.80 and 5,438.20 is: 7,506.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,795.30 : 10,759.80 = 5,438.20 : x
  2. Step 2: Convert to fraction form
    7,795.30/10,759.80 = 5,438.20/x
  3. Step 3: Cross multiply
    7,795.30x = 10,759.80 × 5,438.20
  4. Step 4: Simplify right side
    7,795.30x = 58,513,944.36
  5. Step 5: Solve for x
    x = 58,513,944.36/7,795.30
  6. Step 6: Final answer
    x = 7,506.31

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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.