Home / 5,129.62-7,075.35-3,141.16

Finding the Fourth Proportional to 5,129.62, 7,075.35 and 3,141.16

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Solution

The fourth proportional to 5,129.62, 7,075.35 and 3,141.16 is: 4,332.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.62 : 7,075.35 = 3,141.16 : x
  2. Step 2: Convert to fraction form
    5,129.62/7,075.35 = 3,141.16/x
  3. Step 3: Cross multiply
    5,129.62x = 7,075.35 × 3,141.16
  4. Step 4: Simplify right side
    5,129.62x = 22,224,806.41
  5. Step 5: Solve for x
    x = 22,224,806.41/5,129.62
  6. Step 6: Final answer
    x = 4,332.64

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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.