Home / 7,811.34-11,715.66-2,617.20

Finding the Fourth Proportional to 7,811.34, 11,715.66 and 2,617.20

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Solution

The fourth proportional to 7,811.34, 11,715.66 and 2,617.20 is: 3,925.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.34 : 11,715.66 = 2,617.20 : x
  2. Step 2: Convert to fraction form
    7,811.34/11,715.66 = 2,617.20/x
  3. Step 3: Cross multiply
    7,811.34x = 11,715.66 × 2,617.20
  4. Step 4: Simplify right side
    7,811.34x = 30,662,225.35
  5. Step 5: Solve for x
    x = 30,662,225.35/7,811.34
  6. Step 6: Final answer
    x = 3,925.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.