Home / 8,931.24-13,398.70-3,087.08

Finding the Fourth Proportional to 8,931.24, 13,398.70 and 3,087.08

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Solution

The fourth proportional to 8,931.24, 13,398.70 and 3,087.08 is: 4,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.24 : 13,398.70 = 3,087.08 : x
  2. Step 2: Convert to fraction form
    8,931.24/13,398.70 = 3,087.08/x
  3. Step 3: Cross multiply
    8,931.24x = 13,398.70 × 3,087.08
  4. Step 4: Simplify right side
    8,931.24x = 41,362,858.80
  5. Step 5: Solve for x
    x = 41,362,858.80/8,931.24
  6. Step 6: Final answer
    x = 4,631.26

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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.