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Finding the Fourth Proportional to 6,477.80, 9,738.30 and 5,527.40

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Solution

The fourth proportional to 6,477.80, 9,738.30 and 5,527.40 is: 8,309.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,477.80 : 9,738.30 = 5,527.40 : x
  2. Step 2: Convert to fraction form
    6,477.80/9,738.30 = 5,527.40/x
  3. Step 3: Cross multiply
    6,477.80x = 9,738.30 × 5,527.40
  4. Step 4: Simplify right side
    6,477.80x = 53,827,479.42
  5. Step 5: Solve for x
    x = 53,827,479.42/6,477.80
  6. Step 6: Final answer
    x = 8,309.53

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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.