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Finding the Fourth Proportional to 6,437.40, 9,641.70 and 5,141.40

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Solution

The fourth proportional to 6,437.40, 9,641.70 and 5,141.40 is: 7,700.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,437.40 : 9,641.70 = 5,141.40 : x
  2. Step 2: Convert to fraction form
    6,437.40/9,641.70 = 5,141.40/x
  3. Step 3: Cross multiply
    6,437.40x = 9,641.70 × 5,141.40
  4. Step 4: Simplify right side
    6,437.40x = 49,571,836.38
  5. Step 5: Solve for x
    x = 49,571,836.38/6,437.40
  6. Step 6: Final answer
    x = 7,700.60

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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.