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Finding the Fourth Proportional to 8,757.55, 13,128.93 and 4,075.17

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Solution

The fourth proportional to 8,757.55, 13,128.93 and 4,075.17 is: 6,109.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.55 : 13,128.93 = 4,075.17 : x
  2. Step 2: Convert to fraction form
    8,757.55/13,128.93 = 4,075.17/x
  3. Step 3: Cross multiply
    8,757.55x = 13,128.93 × 4,075.17
  4. Step 4: Simplify right side
    8,757.55x = 53,502,621.67
  5. Step 5: Solve for x
    x = 53,502,621.67/8,757.55
  6. Step 6: Final answer
    x = 6,109.31

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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.