Home / 5,129.22-7,075.56-3,430.65

Finding the Fourth Proportional to 5,129.22, 7,075.56 and 3,430.65

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Solution

The fourth proportional to 5,129.22, 7,075.56 and 3,430.65 is: 4,732.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.22 : 7,075.56 = 3,430.65 : x
  2. Step 2: Convert to fraction form
    5,129.22/7,075.56 = 3,430.65/x
  3. Step 3: Cross multiply
    5,129.22x = 7,075.56 × 3,430.65
  4. Step 4: Simplify right side
    5,129.22x = 24,273,769.91
  5. Step 5: Solve for x
    x = 24,273,769.91/5,129.22
  6. Step 6: Final answer
    x = 4,732.45

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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.