Home / 9,885.07-13,641.63-5,905.45

Finding the Fourth Proportional to 9,885.07, 13,641.63 and 5,905.45

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Solution

The fourth proportional to 9,885.07, 13,641.63 and 5,905.45 is: 8,149.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.07 : 13,641.63 = 5,905.45 : x
  2. Step 2: Convert to fraction form
    9,885.07/13,641.63 = 5,905.45/x
  3. Step 3: Cross multiply
    9,885.07x = 13,641.63 × 5,905.45
  4. Step 4: Simplify right side
    9,885.07x = 80,559,963.88
  5. Step 5: Solve for x
    x = 80,559,963.88/9,885.07
  6. Step 6: Final answer
    x = 8,149.66

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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.