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Finding the Fourth Proportional to 8,879.57, 13,328.14 and 4,719.59

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Solution

The fourth proportional to 8,879.57, 13,328.14 and 4,719.59 is: 7,084.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.57 : 13,328.14 = 4,719.59 : x
  2. Step 2: Convert to fraction form
    8,879.57/13,328.14 = 4,719.59/x
  3. Step 3: Cross multiply
    8,879.57x = 13,328.14 × 4,719.59
  4. Step 4: Simplify right side
    8,879.57x = 62,903,356.26
  5. Step 5: Solve for x
    x = 62,903,356.26/8,879.57
  6. Step 6: Final answer
    x = 7,084.05

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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.