Home / 2,378.08-3,281-1,678.24

Finding the Fourth Proportional to 2,378.08, 3,281 and 1,678.24

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Solution

The fourth proportional to 2,378.08, 3,281 and 1,678.24 is: 2,315.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.08 : 3,281 = 1,678.24 : x
  2. Step 2: Convert to fraction form
    2,378.08/3,281 = 1,678.24/x
  3. Step 3: Cross multiply
    2,378.08x = 3,281 × 1,678.24
  4. Step 4: Simplify right side
    2,378.08x = 5,506,305.44
  5. Step 5: Solve for x
    x = 5,506,305.44/2,378.08
  6. Step 6: Final answer
    x = 2,315.44

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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.