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Finding the Fourth Proportional to 7,987.60, 11,922.26 and 7,495.12

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Solution

The fourth proportional to 7,987.60, 11,922.26 and 7,495.12 is: 11,187.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.60 : 11,922.26 = 7,495.12 : x
  2. Step 2: Convert to fraction form
    7,987.60/11,922.26 = 7,495.12/x
  3. Step 3: Cross multiply
    7,987.60x = 11,922.26 × 7,495.12
  4. Step 4: Simplify right side
    7,987.60x = 89,358,769.37
  5. Step 5: Solve for x
    x = 89,358,769.37/7,987.60
  6. Step 6: Final answer
    x = 11,187.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.