Home / 9,139.12-13,709.34-3,875.26

Finding the Fourth Proportional to 9,139.12, 13,709.34 and 3,875.26

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Solution

The fourth proportional to 9,139.12, 13,709.34 and 3,875.26 is: 5,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.12 : 13,709.34 = 3,875.26 : x
  2. Step 2: Convert to fraction form
    9,139.12/13,709.34 = 3,875.26/x
  3. Step 3: Cross multiply
    9,139.12x = 13,709.34 × 3,875.26
  4. Step 4: Simplify right side
    9,139.12x = 53,127,256.93
  5. Step 5: Solve for x
    x = 53,127,256.93/9,139.12
  6. Step 6: Final answer
    x = 5,813.17

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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.