Home / 9,110.80-12,572.43-5,075.78

Finding the Fourth Proportional to 9,110.80, 12,572.43 and 5,075.78

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Solution

The fourth proportional to 9,110.80, 12,572.43 and 5,075.78 is: 7,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,110.80 : 12,572.43 = 5,075.78 : x
  2. Step 2: Convert to fraction form
    9,110.80/12,572.43 = 5,075.78/x
  3. Step 3: Cross multiply
    9,110.80x = 12,572.43 × 5,075.78
  4. Step 4: Simplify right side
    9,110.80x = 63,814,906.12
  5. Step 5: Solve for x
    x = 63,814,906.12/9,110.80
  6. Step 6: Final answer
    x = 7,004.32

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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.