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Finding the Fourth Proportional to 9,709.80, 14,566.40 and 6,425.56

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Solution

The fourth proportional to 9,709.80, 14,566.40 and 6,425.56 is: 9,639.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,709.80 : 14,566.40 = 6,425.56 : x
  2. Step 2: Convert to fraction form
    9,709.80/14,566.40 = 6,425.56/x
  3. Step 3: Cross multiply
    9,709.80x = 14,566.40 × 6,425.56
  4. Step 4: Simplify right side
    9,709.80x = 93,597,277.18
  5. Step 5: Solve for x
    x = 93,597,277.18/9,709.80
  6. Step 6: Final answer
    x = 9,639.46

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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.