Home / 9,283.95-12,811.91-5,305.21

Finding the Fourth Proportional to 9,283.95, 12,811.91 and 5,305.21

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Solution

The fourth proportional to 9,283.95, 12,811.91 and 5,305.21 is: 7,321.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,283.95 : 12,811.91 = 5,305.21 : x
  2. Step 2: Convert to fraction form
    9,283.95/12,811.91 = 5,305.21/x
  3. Step 3: Cross multiply
    9,283.95x = 12,811.91 × 5,305.21
  4. Step 4: Simplify right side
    9,283.95x = 67,969,814.50
  5. Step 5: Solve for x
    x = 67,969,814.50/9,283.95
  6. Step 6: Final answer
    x = 7,321.22

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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.