Home / 8,955.90-12,360.87-5,422.14

Finding the Fourth Proportional to 8,955.90, 12,360.87 and 5,422.14

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Solution

The fourth proportional to 8,955.90, 12,360.87 and 5,422.14 is: 7,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.90 : 12,360.87 = 5,422.14 : x
  2. Step 2: Convert to fraction form
    8,955.90/12,360.87 = 5,422.14/x
  3. Step 3: Cross multiply
    8,955.90x = 12,360.87 × 5,422.14
  4. Step 4: Simplify right side
    8,955.90x = 67,022,367.66
  5. Step 5: Solve for x
    x = 67,022,367.66/8,955.90
  6. Step 6: Final answer
    x = 7,483.60

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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.