Home / 7,923.90-11,871.45-6,455.10

Finding the Fourth Proportional to 7,923.90, 11,871.45 and 6,455.10

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Solution

The fourth proportional to 7,923.90, 11,871.45 and 6,455.10 is: 9,670.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.90 : 11,871.45 = 6,455.10 : x
  2. Step 2: Convert to fraction form
    7,923.90/11,871.45 = 6,455.10/x
  3. Step 3: Cross multiply
    7,923.90x = 11,871.45 × 6,455.10
  4. Step 4: Simplify right side
    7,923.90x = 76,631,396.90
  5. Step 5: Solve for x
    x = 76,631,396.90/7,923.90
  6. Step 6: Final answer
    x = 9,670.92

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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.