Home / 7,712.10-11,581.20-7,317.54

Finding the Fourth Proportional to 7,712.10, 11,581.20 and 7,317.54

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Solution

The fourth proportional to 7,712.10, 11,581.20 and 7,317.54 is: 10,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.10 : 11,581.20 = 7,317.54 : x
  2. Step 2: Convert to fraction form
    7,712.10/11,581.20 = 7,317.54/x
  3. Step 3: Cross multiply
    7,712.10x = 11,581.20 × 7,317.54
  4. Step 4: Simplify right side
    7,712.10x = 84,745,894.25
  5. Step 5: Solve for x
    x = 84,745,894.25/7,712.10
  6. Step 6: Final answer
    x = 10,988.69

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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.