Home / 1,544.40-2,140.24-1,515.20

Finding the Fourth Proportional to 1,544.40, 2,140.24 and 1,515.20

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Solution

The fourth proportional to 1,544.40, 2,140.24 and 1,515.20 is: 2,099.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.40 : 2,140.24 = 1,515.20 : x
  2. Step 2: Convert to fraction form
    1,544.40/2,140.24 = 1,515.20/x
  3. Step 3: Cross multiply
    1,544.40x = 2,140.24 × 1,515.20
  4. Step 4: Simplify right side
    1,544.40x = 3,242,891.65
  5. Step 5: Solve for x
    x = 3,242,891.65/1,544.40
  6. Step 6: Final answer
    x = 2,099.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.