Home / 8,643.09-12,961.36-2,798.13

Finding the Fourth Proportional to 8,643.09, 12,961.36 and 2,798.13

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Solution

The fourth proportional to 8,643.09, 12,961.36 and 2,798.13 is: 4,196.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.09 : 12,961.36 = 2,798.13 : x
  2. Step 2: Convert to fraction form
    8,643.09/12,961.36 = 2,798.13/x
  3. Step 3: Cross multiply
    8,643.09x = 12,961.36 × 2,798.13
  4. Step 4: Simplify right side
    8,643.09x = 36,267,570.26
  5. Step 5: Solve for x
    x = 36,267,570.26/8,643.09
  6. Step 6: Final answer
    x = 4,196.13

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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.