Home / 8,718.72-13,078.44-2,875.36

Finding the Fourth Proportional to 8,718.72, 13,078.44 and 2,875.36

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Solution

The fourth proportional to 8,718.72, 13,078.44 and 2,875.36 is: 4,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.72 : 13,078.44 = 2,875.36 : x
  2. Step 2: Convert to fraction form
    8,718.72/13,078.44 = 2,875.36/x
  3. Step 3: Cross multiply
    8,718.72x = 13,078.44 × 2,875.36
  4. Step 4: Simplify right side
    8,718.72x = 37,605,223.24
  5. Step 5: Solve for x
    x = 37,605,223.24/8,718.72
  6. Step 6: Final answer
    x = 4,313.16

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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.