Home / 5,320.12-7,980.41-3,127.20

Finding the Fourth Proportional to 5,320.12, 7,980.41 and 3,127.20

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Solution

The fourth proportional to 5,320.12, 7,980.41 and 3,127.20 is: 4,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.12 : 7,980.41 = 3,127.20 : x
  2. Step 2: Convert to fraction form
    5,320.12/7,980.41 = 3,127.20/x
  3. Step 3: Cross multiply
    5,320.12x = 7,980.41 × 3,127.20
  4. Step 4: Simplify right side
    5,320.12x = 24,956,338.15
  5. Step 5: Solve for x
    x = 24,956,338.15/5,320.12
  6. Step 6: Final answer
    x = 4,690.94

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1.5x scale

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.