Home / 5,120.04-7,065.60-2,882.32

Finding the Fourth Proportional to 5,120.04, 7,065.60 and 2,882.32

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Solution

The fourth proportional to 5,120.04, 7,065.60 and 2,882.32 is: 3,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.04 : 7,065.60 = 2,882.32 : x
  2. Step 2: Convert to fraction form
    5,120.04/7,065.60 = 2,882.32/x
  3. Step 3: Cross multiply
    5,120.04x = 7,065.60 × 2,882.32
  4. Step 4: Simplify right side
    5,120.04x = 20,365,320.19
  5. Step 5: Solve for x
    x = 20,365,320.19/5,120.04
  6. Step 6: Final answer
    x = 3,977.57

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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.