Home / 2,315.40-3,473.10-1,984.20

Finding the Fourth Proportional to 2,315.40, 3,473.10 and 1,984.20

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Solution

The fourth proportional to 2,315.40, 3,473.10 and 1,984.20 is: 2,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.40 : 3,473.10 = 1,984.20 : x
  2. Step 2: Convert to fraction form
    2,315.40/3,473.10 = 1,984.20/x
  3. Step 3: Cross multiply
    2,315.40x = 3,473.10 × 1,984.20
  4. Step 4: Simplify right side
    2,315.40x = 6,891,325.02
  5. Step 5: Solve for x
    x = 6,891,325.02/2,315.40
  6. Step 6: Final answer
    x = 2,976.30

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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.