Home / 8,075.43-11,189.07-7,900.47

Finding the Fourth Proportional to 8,075.43, 11,189.07 and 7,900.47

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Solution

The fourth proportional to 8,075.43, 11,189.07 and 7,900.47 is: 10,946.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.43 : 11,189.07 = 7,900.47 : x
  2. Step 2: Convert to fraction form
    8,075.43/11,189.07 = 7,900.47/x
  3. Step 3: Cross multiply
    8,075.43x = 11,189.07 × 7,900.47
  4. Step 4: Simplify right side
    8,075.43x = 88,398,911.86
  5. Step 5: Solve for x
    x = 88,398,911.86/8,075.43
  6. Step 6: Final answer
    x = 10,946.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.