Home / 9,117.88-13,671.60-5,422.69

Finding the Fourth Proportional to 9,117.88, 13,671.60 and 5,422.69

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Solution

The fourth proportional to 9,117.88, 13,671.60 and 5,422.69 is: 8,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.88 : 13,671.60 = 5,422.69 : x
  2. Step 2: Convert to fraction form
    9,117.88/13,671.60 = 5,422.69/x
  3. Step 3: Cross multiply
    9,117.88x = 13,671.60 × 5,422.69
  4. Step 4: Simplify right side
    9,117.88x = 74,136,848.60
  5. Step 5: Solve for x
    x = 74,136,848.60/9,117.88
  6. Step 6: Final answer
    x = 8,130.93

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1.5x scale

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.