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Finding the Fourth Proportional to 7,177.55, 9,900.54 and 4,935.54

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Solution

The fourth proportional to 7,177.55, 9,900.54 and 4,935.54 is: 6,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177.55 : 9,900.54 = 4,935.54 : x
  2. Step 2: Convert to fraction form
    7,177.55/9,900.54 = 4,935.54/x
  3. Step 3: Cross multiply
    7,177.55x = 9,900.54 × 4,935.54
  4. Step 4: Simplify right side
    7,177.55x = 48,864,461.69
  5. Step 5: Solve for x
    x = 48,864,461.69/7,177.55
  6. Step 6: Final answer
    x = 6,807.96

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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.