Home / 7,079.13-10,621.60-3,128.30

Finding the Fourth Proportional to 7,079.13, 10,621.60 and 3,128.30

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Solution

The fourth proportional to 7,079.13, 10,621.60 and 3,128.30 is: 4,693.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.13 : 10,621.60 = 3,128.30 : x
  2. Step 2: Convert to fraction form
    7,079.13/10,621.60 = 3,128.30/x
  3. Step 3: Cross multiply
    7,079.13x = 10,621.60 × 3,128.30
  4. Step 4: Simplify right side
    7,079.13x = 33,227,482.53
  5. Step 5: Solve for x
    x = 33,227,482.53/7,079.13
  6. Step 6: Final answer
    x = 4,693.73

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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.