Home / 9,342.80-13,985.40-5,435.60

Finding the Fourth Proportional to 9,342.80, 13,985.40 and 5,435.60

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Solution

The fourth proportional to 9,342.80, 13,985.40 and 5,435.60 is: 8,136.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,342.80 : 13,985.40 = 5,435.60 : x
  2. Step 2: Convert to fraction form
    9,342.80/13,985.40 = 5,435.60/x
  3. Step 3: Cross multiply
    9,342.80x = 13,985.40 × 5,435.60
  4. Step 4: Simplify right side
    9,342.80x = 76,019,040.24
  5. Step 5: Solve for x
    x = 76,019,040.24/9,342.80
  6. Step 6: Final answer
    x = 8,136.64

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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.