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Finding the Fourth Proportional to 7,955.04, 11,920.08 and 5,176.80

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Solution

The fourth proportional to 7,955.04, 11,920.08 and 5,176.80 is: 7,757.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.04 : 11,920.08 = 5,176.80 : x
  2. Step 2: Convert to fraction form
    7,955.04/11,920.08 = 5,176.80/x
  3. Step 3: Cross multiply
    7,955.04x = 11,920.08 × 5,176.80
  4. Step 4: Simplify right side
    7,955.04x = 61,707,870.14
  5. Step 5: Solve for x
    x = 61,707,870.14/7,955.04
  6. Step 6: Final answer
    x = 7,757.08

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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.