Home / 9,881.96-13,637.09-5,405.69

Finding the Fourth Proportional to 9,881.96, 13,637.09 and 5,405.69

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Solution

The fourth proportional to 9,881.96, 13,637.09 and 5,405.69 is: 7,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,881.96 : 13,637.09 = 5,405.69 : x
  2. Step 2: Convert to fraction form
    9,881.96/13,637.09 = 5,405.69/x
  3. Step 3: Cross multiply
    9,881.96x = 13,637.09 × 5,405.69
  4. Step 4: Simplify right side
    9,881.96x = 73,717,881.04
  5. Step 5: Solve for x
    x = 73,717,881.04/9,881.96
  6. Step 6: Final answer
    x = 7,459.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.