Home / 8,075.79-11,128.70-6,189.50

Finding the Fourth Proportional to 8,075.79, 11,128.70 and 6,189.50

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Solution

The fourth proportional to 8,075.79, 11,128.70 and 6,189.50 is: 8,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.79 : 11,128.70 = 6,189.50 : x
  2. Step 2: Convert to fraction form
    8,075.79/11,128.70 = 6,189.50/x
  3. Step 3: Cross multiply
    8,075.79x = 11,128.70 × 6,189.50
  4. Step 4: Simplify right side
    8,075.79x = 68,881,002.06
  5. Step 5: Solve for x
    x = 68,881,002.06/8,075.79
  6. Step 6: Final answer
    x = 8,529.32

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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.