Home / 8,970.80-12,382.52-7,290.91

Finding the Fourth Proportional to 8,970.80, 12,382.52 and 7,290.91

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Solution

The fourth proportional to 8,970.80, 12,382.52 and 7,290.91 is: 10,063.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.80 : 12,382.52 = 7,290.91 : x
  2. Step 2: Convert to fraction form
    8,970.80/12,382.52 = 7,290.91/x
  3. Step 3: Cross multiply
    8,970.80x = 12,382.52 × 7,290.91
  4. Step 4: Simplify right side
    8,970.80x = 90,279,858.93
  5. Step 5: Solve for x
    x = 90,279,858.93/8,970.80
  6. Step 6: Final answer
    x = 10,063.75

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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.