Home / 8,752.26-12,078.45-5,215.80

Finding the Fourth Proportional to 8,752.26, 12,078.45 and 5,215.80

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Solution

The fourth proportional to 8,752.26, 12,078.45 and 5,215.80 is: 7,198.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752.26 : 12,078.45 = 5,215.80 : x
  2. Step 2: Convert to fraction form
    8,752.26/12,078.45 = 5,215.80/x
  3. Step 3: Cross multiply
    8,752.26x = 12,078.45 × 5,215.80
  4. Step 4: Simplify right side
    8,752.26x = 62,998,779.51
  5. Step 5: Solve for x
    x = 62,998,779.51/8,752.26
  6. Step 6: Final answer
    x = 7,198.00

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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.