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Finding the Fourth Proportional to 7,955.48, 10,955.22 and 7,290.20

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Solution

The fourth proportional to 7,955.48, 10,955.22 and 7,290.20 is: 10,039.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.48 : 10,955.22 = 7,290.20 : x
  2. Step 2: Convert to fraction form
    7,955.48/10,955.22 = 7,290.20/x
  3. Step 3: Cross multiply
    7,955.48x = 10,955.22 × 7,290.20
  4. Step 4: Simplify right side
    7,955.48x = 79,865,690.07
  5. Step 5: Solve for x
    x = 79,865,690.07/7,955.48
  6. Step 6: Final answer
    x = 10,039.09

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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.