Home / 8,955.77-12,358.98-5,418.09

Finding the Fourth Proportional to 8,955.77, 12,358.98 and 5,418.09

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Solution

The fourth proportional to 8,955.77, 12,358.98 and 5,418.09 is: 7,476.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.77 : 12,358.98 = 5,418.09 : x
  2. Step 2: Convert to fraction form
    8,955.77/12,358.98 = 5,418.09/x
  3. Step 3: Cross multiply
    8,955.77x = 12,358.98 × 5,418.09
  4. Step 4: Simplify right side
    8,955.77x = 66,962,065.95
  5. Step 5: Solve for x
    x = 66,962,065.95/8,955.77
  6. Step 6: Final answer
    x = 7,476.98

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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.