Home / 2,315.80-3,473.70-1,019.80

Finding the Fourth Proportional to 2,315.80, 3,473.70 and 1,019.80

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Solution

The fourth proportional to 2,315.80, 3,473.70 and 1,019.80 is: 1,529.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.80 : 3,473.70 = 1,019.80 : x
  2. Step 2: Convert to fraction form
    2,315.80/3,473.70 = 1,019.80/x
  3. Step 3: Cross multiply
    2,315.80x = 3,473.70 × 1,019.80
  4. Step 4: Simplify right side
    2,315.80x = 3,542,479.26
  5. Step 5: Solve for x
    x = 3,542,479.26/2,315.80
  6. Step 6: Final answer
    x = 1,529.70

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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.